diff --git a/.github/workflows/cla.yaml b/.github/workflows/cla.yaml
index 3f4bf21864..013adc9ca8 100644
--- a/.github/workflows/cla.yaml
+++ b/.github/workflows/cla.yaml
@@ -13,7 +13,7 @@ jobs:
     steps:
       - name: CLA Assistant
         if: (github.event.comment.body == 'recheck' || github.event.comment.body == 'I have read the CLA Document and I hereby sign the CLA') || github.event_name == 'pull_request_target'
-        uses: secondlife-3p/contributor-assistant@v2
+        uses: secondlife-3p/contributor-assistant@v2.6.1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           PERSONAL_ACCESS_TOKEN: ${{ secrets.SHARED_CLA_TOKEN }}
diff --git a/indra/llcommon/llsdjson.cpp b/indra/llcommon/llsdjson.cpp
index 1df2a8f9eb..655869a704 100644
--- a/indra/llcommon/llsdjson.cpp
+++ b/indra/llcommon/llsdjson.cpp
@@ -63,15 +63,16 @@ LLSD LlsdFromJson(const boost::json::value& val)
     case boost::json::kind::array:
     {
         result = LLSD::emptyArray();
-        auto& array = val.as_array();
+        const boost::json::array& array = val.as_array();
+        size_t size = array.size();
         // allocate elements 0 .. (size() - 1) to avoid incremental allocation
         if (! array.empty())
         {
-            result[array.size() - 1] = LLSD();
+            result[size - 1] = LLSD();
         }
-        for (const auto &element : array)
+        for (size_t i = 0; i < size; i++)
         {
-            result.append(LlsdFromJson(element));
+            result[i] = (LlsdFromJson(array[i]));
         }
         break;
     }
diff --git a/indra/llinventory/llsettingswater.cpp b/indra/llinventory/llsettingswater.cpp
index b30dbfeac2..b5d59dc497 100644
--- a/indra/llinventory/llsettingswater.cpp
+++ b/indra/llinventory/llsettingswater.cpp
@@ -133,8 +133,8 @@ void LLSettingsWater::loadValuesFromLLSD()
     mWave1Dir = LLVector2(settings[SETTING_WAVE1_DIR]);
     mWave2Dir = LLVector2(settings[SETTING_WAVE2_DIR]);
 
-    mNormalMapID = getNormalMapID();
-    mTransparentTextureID = getTransparentTextureID();
+    mNormalMapID = settings[SETTING_NORMAL_MAP].asUUID();
+    mTransparentTextureID = settings[SETTING_TRANSPARENT_TEXTURE].asUUID();
 }
 
 void LLSettingsWater::saveValuesToLLSD()
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 8eee700b5c..0e155d4d05 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -6030,10 +6030,7 @@ void LLAppViewer::sendLogoutRequest()
         gLogoutMaxTime = LOGOUT_REQUEST_TIME;
         mLogoutRequestSent = true;
 
-        if(LLVoiceClient::instanceExists())
-        {
-            LLVoiceClient::getInstance()->setVoiceEnabled(false);
-        }
+        LLVoiceClient::setVoiceEnabled(false);
     }
 }
 
diff --git a/indra/newview/llappviewerwin32.cpp b/indra/newview/llappviewerwin32.cpp
index 2c3596be28..4361107589 100644
--- a/indra/newview/llappviewerwin32.cpp
+++ b/indra/newview/llappviewerwin32.cpp
@@ -195,8 +195,15 @@ namespace
 
             // LL_ERRS message, when there is one
             sBugSplatSender->setDefaultUserDescription(WCSTR(LLError::getFatalMessage()));
-            // App state
+
+            sBugSplatSender->setAttribute(WCSTR(L"OS"), WCSTR(LLOSInfo::instance().getOSStringSimple())); // In case we ever stop using email for this
             sBugSplatSender->setAttribute(WCSTR(L"AppState"), WCSTR(LLStartUp::getStartupStateString()));
+            sBugSplatSender->setAttribute(WCSTR(L"GL Vendor"), WCSTR(gGLManager.mGLVendor));
+            sBugSplatSender->setAttribute(WCSTR(L"GL Version"), WCSTR(gGLManager.mGLVersionString));
+            sBugSplatSender->setAttribute(WCSTR(L"GPU Version"), WCSTR(gGLManager.mDriverVersionVendorString));
+            sBugSplatSender->setAttribute(WCSTR(L"GL Renderer"), WCSTR(gGLManager.mGLRenderer));
+            sBugSplatSender->setAttribute(WCSTR(L"VRAM"), WCSTR(STRINGIZE(gGLManager.mVRAM)));
+            sBugSplatSender->setAttribute(WCSTR(L"RAM"), WCSTR(STRINGIZE(gSysMemory.getPhysicalMemoryKB().value())));
 
             if (gAgent.getRegion())
             {
diff --git a/indra/newview/llchiclet.cpp b/indra/newview/llchiclet.cpp
index f43198bb69..6f81d8d23e 100644
--- a/indra/newview/llchiclet.cpp
+++ b/indra/newview/llchiclet.cpp
@@ -1284,7 +1284,7 @@ bool LLChicletPanel::postBuild()
     LLScriptFloaterManager::getInstance()->addNewObjectCallback(boost::bind(&LLChicletPanel::objectChicletCallback, this, _1));
     LLScriptFloaterManager::getInstance()->addToggleObjectFloaterCallback(boost::bind(&LLChicletPanel::objectChicletCallback, this, _1));
     LLIMChiclet::sFindChicletsSignal.connect(boost::bind(&LLChicletPanel::findChiclet<LLChiclet>, this, _1));
-    LLVoiceChannel::setCurrentVoiceChannelChangedCallback(boost::bind(&LLChicletPanel::onCurrentVoiceChannelChanged, this, _1));
+    mVoiceChannelChanged = LLVoiceChannel::setCurrentVoiceChannelChangedCallback(boost::bind(&LLChicletPanel::onCurrentVoiceChannelChanged, this, _1));
 
     mLeftScrollButton=getChild<LLButton>("chicklet_left_scroll_button");
     LLTransientFloaterMgr::getInstance()->addControlView(mLeftScrollButton);
diff --git a/indra/newview/llchiclet.h b/indra/newview/llchiclet.h
index 26b5afcb25..7292492c5c 100644
--- a/indra/newview/llchiclet.h
+++ b/indra/newview/llchiclet.h
@@ -1253,6 +1253,8 @@ protected:
     S32 mMinWidth;
     bool mShowControls;
     static const S32 s_scroll_ratio;
+
+    boost::signals2::connection mVoiceChannelChanged;
 };
 
 template<class T>
diff --git a/indra/newview/llconversationlog.cpp b/indra/newview/llconversationlog.cpp
index 721f5b34b7..ff642e4e21 100644
--- a/indra/newview/llconversationlog.cpp
+++ b/indra/newview/llconversationlog.cpp
@@ -200,6 +200,22 @@ LLConversationLog::LLConversationLog() :
 {
 }
 
+LLConversationLog::~LLConversationLog()
+{
+    if (mLoggingEnabled)
+    {
+        if (LLIMMgr::instanceExists())
+        {
+            LLIMMgr::instance().removeSessionObserver(this);
+        }
+        LLAvatarTracker::instance().removeObserver(mFriendObserver);
+    }
+    if (mAvatarNameCacheConnection.connected())
+    {
+        mAvatarNameCacheConnection.disconnect();
+    }
+}
+
 void LLConversationLog::enableLogging(S32 log_mode)
 {
     mLoggingEnabled = log_mode > 0;
diff --git a/indra/newview/llconversationlog.h b/indra/newview/llconversationlog.h
index b3a5be321e..957d90d55e 100644
--- a/indra/newview/llconversationlog.h
+++ b/indra/newview/llconversationlog.h
@@ -166,13 +166,7 @@ public:
 
 private:
 
-    virtual ~LLConversationLog()
-    {
-        if (mAvatarNameCacheConnection.connected())
-        {
-            mAvatarNameCacheConnection.disconnect();
-        }
-    }
+    virtual ~LLConversationLog();
 
     void enableLogging(S32 log_mode);
 
diff --git a/indra/newview/llfloaterimsession.cpp b/indra/newview/llfloaterimsession.cpp
index a2d89cf8b4..ea8dfff3f9 100644
--- a/indra/newview/llfloaterimsession.cpp
+++ b/indra/newview/llfloaterimsession.cpp
@@ -696,6 +696,7 @@ void LLFloaterIMSession::onClose(bool app_quitting)
     // Last change:
     // EXT-3516 X Button should end IM session, _ button should hide
     gIMMgr->leaveSession(mSessionID);
+    mSession = nullptr; // leaveSession should have deleted it.
     // *TODO: Study why we need to restore the floater before we close it.
     // Might be because we want to save some state data in some clean open state.
     LLFloaterIMSessionTab::restoreFloater();
diff --git a/indra/newview/llfloaterimsessiontab.cpp b/indra/newview/llfloaterimsessiontab.cpp
index 91009c94dc..b71fe7c802 100644
--- a/indra/newview/llfloaterimsessiontab.cpp
+++ b/indra/newview/llfloaterimsessiontab.cpp
@@ -82,6 +82,7 @@ LLFloaterIMSessionTab::LLFloaterIMSessionTab(const LLSD& session_id)
 {
     setAutoFocus(false);
     mSession = LLIMModel::getInstance()->findIMSession(mSessionID);
+    LLIMMgr::instance().addSessionObserver(this);
 
     mCommitCallbackRegistrar.add("IMSession.Menu.Action",
             boost::bind(&LLFloaterIMSessionTab::onIMSessionMenuItemClicked,  this, _2));
@@ -104,6 +105,7 @@ LLFloaterIMSessionTab::LLFloaterIMSessionTab(const LLSD& session_id)
 LLFloaterIMSessionTab::~LLFloaterIMSessionTab()
 {
     delete mRefreshTimer;
+    LLIMMgr::instance().removeSessionObserver(this);
 
     LLFloaterIMContainer* im_container = LLFloaterIMContainer::findInstance();
     if (im_container)
@@ -442,7 +444,10 @@ void LLFloaterIMSessionTab::enableDisableCallBtn()
 
     bool enable = false;
 
-    if (mSessionID.notNull() && mSession && mSession->mSessionInitialized && mSession->mCallBackEnabled)
+    if (mSessionID.notNull()
+        && mSession
+        && mSession->mSessionInitialized
+        && mSession->mCallBackEnabled)
     {
         if (mVoiceButtonHangUpMode)
         {
@@ -452,9 +457,10 @@ void LLFloaterIMSessionTab::enableDisableCallBtn()
         else
         {
             // We allow to start call from this state only
-            if (mSession->mVoiceChannel  &&
-                !mSession->mVoiceChannel->callStarted() &&
-                LLVoiceClient::instanceExists())
+            if (LLVoiceClient::instanceExists() &&
+                mSession->mVoiceChannel  &&
+                !mSession->mVoiceChannel->callStarted()
+                )
             {
                 LLVoiceClient* client = LLVoiceClient::getInstance();
                 if (client->voiceEnabled() && client->isVoiceWorking())
@@ -1368,6 +1374,14 @@ LLView* LLFloaterIMSessionTab::getChatHistory()
     return mChatHistory;
 }
 
+void LLFloaterIMSessionTab::sessionRemoved(const LLUUID& session_id)
+{
+    if (session_id == mSessionID)
+    {
+        mSession = nullptr;
+    }
+}
+
 bool LLFloaterIMSessionTab::handleKeyHere(KEY key, MASK mask )
 {
     bool handled = false;
diff --git a/indra/newview/llfloaterimsessiontab.h b/indra/newview/llfloaterimsessiontab.h
index 4893842640..cf172c9072 100644
--- a/indra/newview/llfloaterimsessiontab.h
+++ b/indra/newview/llfloaterimsessiontab.h
@@ -47,6 +47,7 @@ class LLPanelEmojiComplete;
 
 class LLFloaterIMSessionTab
     : public LLTransientDockableFloater
+    , public LLIMSessionObserver
 {
     using super = LLTransientDockableFloater;
 
@@ -78,13 +79,13 @@ public:
     bool isNearbyChat() {return mIsNearbyChat;}
 
     // LLFloater overrides
-    /*virtual*/ void onOpen(const LLSD& key);
-    /*virtual*/ bool postBuild();
-    /*virtual*/ void draw();
-    /*virtual*/ void setVisible(bool visible);
-    /*virtual*/ void setFocus(bool focus);
-    /*virtual*/ void closeFloater(bool app_quitting = false);
-    /*virtual*/ void deleteAllChildren();
+    void onOpen(const LLSD& key) override;
+    bool postBuild() override;
+    void draw() override;
+    void setVisible(bool visible) override;
+    void setFocus(bool focus) override;
+    void closeFloater(bool app_quitting = false) override;
+    void deleteAllChildren() override;
 
     // Handle the left hand participant list widgets
     void addConversationViewParticipant(LLConversationItem* item, bool update_view = true);
@@ -100,7 +101,7 @@ public:
     virtual void updateMessages() {}
     LLConversationItem* getCurSelectedViewModelItem();
     void forceReshape();
-    virtual bool handleKeyHere( KEY key, MASK mask );
+    virtual bool handleKeyHere( KEY key, MASK mask ) override;
     bool isMessagePaneExpanded(){return mMessagePaneExpanded;}
     void setMessagePaneExpanded(bool expanded){mMessagePaneExpanded = expanded;}
     void restoreFloater();
@@ -110,6 +111,13 @@ public:
 
     LLView* getChatHistory();
 
+    // LLIMSessionObserver triggers
+    virtual void sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, bool has_offline_msg) override {}; // Stub
+    virtual void sessionActivated(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id) override {}; // Stub
+    virtual void sessionRemoved(const LLUUID& session_id) override;
+    virtual void sessionVoiceOrIMStarted(const LLUUID& session_id) override {};                              // Stub
+    virtual void sessionIDUpdated(const LLUUID& old_session_id, const LLUUID& new_session_id) override {};   // Stub
+
 protected:
 
     // callback for click on any items of the visual states menu
@@ -141,8 +149,8 @@ protected:
     virtual void enableDisableCallBtn();
 
     // process focus events to set a currently active session
-    /* virtual */ void onFocusReceived();
-    /* virtual */ void onFocusLost();
+    void onFocusReceived() override;
+    void onFocusLost() override;
 
     // prepare chat's params and out one message to chatHistory
     void appendMessage(const LLChat& chat, const LLSD& args = LLSD());
@@ -214,7 +222,7 @@ private:
     void getSelectedUUIDs(uuid_vec_t& selected_uuids);
 
     /// Refreshes the floater at a constant rate.
-    virtual void refresh() = 0;
+    virtual void refresh() override = 0;
 
     /**
      * Adjusts chat history height to fit vertically with input chat field
diff --git a/indra/newview/llimview.cpp b/indra/newview/llimview.cpp
index c4141c3d02..b8448d789f 100644
--- a/indra/newview/llimview.cpp
+++ b/indra/newview/llimview.cpp
@@ -941,7 +941,6 @@ LLIMModel::LLIMSession::LLIMSession(const LLUUID& session_id,
 
 void LLIMModel::LLIMSession::initVoiceChannel(const LLSD& voiceChannelInfo)
 {
-
     if (mVoiceChannel)
     {
         if (mVoiceChannel->isThisVoiceChannel(voiceChannelInfo))
@@ -2642,7 +2641,7 @@ LLCallDialogManager::~LLCallDialogManager()
 
 void LLCallDialogManager::initSingleton()
 {
-    LLVoiceChannel::setCurrentVoiceChannelChangedCallback(LLCallDialogManager::onVoiceChannelChanged);
+    mVoiceChannelChanged = LLVoiceChannel::setCurrentVoiceChannelChangedCallback(LLCallDialogManager::onVoiceChannelChanged);
 }
 
 // static
diff --git a/indra/newview/llimview.h b/indra/newview/llimview.h
index d0c63c1697..1debfcdf0d 100644
--- a/indra/newview/llimview.h
+++ b/indra/newview/llimview.h
@@ -607,6 +607,8 @@ protected:
     std::string mCurrentSessionlName;
     LLIMModel::LLIMSession* mSession;
     LLVoiceChannel::EState mOldState;
+
+    boost::signals2::connection mVoiceChannelChanged;
 };
 
 class LLCallDialog : public LLDockableFloater
diff --git a/indra/newview/llspeakingindicatormanager.cpp b/indra/newview/llspeakingindicatormanager.cpp
index a9ef5e244d..532b245ced 100644
--- a/indra/newview/llspeakingindicatormanager.cpp
+++ b/indra/newview/llspeakingindicatormanager.cpp
@@ -133,6 +133,8 @@ private:
      * @see onChange()
      */
     speaker_ids_t mSwitchedIndicatorsOn;
+
+    boost::signals2::connection mVoiceChannelChanged;
 };
 
 //////////////////////////////////////////////////////////////////////////
@@ -181,7 +183,7 @@ void SpeakingIndicatorManager::unregisterSpeakingIndicator(const LLUUID& speaker
 //////////////////////////////////////////////////////////////////////////
 SpeakingIndicatorManager::SpeakingIndicatorManager()
 {
-    LLVoiceChannel::setCurrentVoiceChannelChangedCallback(boost::bind(&SpeakingIndicatorManager::sOnCurrentChannelChanged, this, _1));
+    mVoiceChannelChanged = LLVoiceChannel::setCurrentVoiceChannelChangedCallback(boost::bind(&SpeakingIndicatorManager::sOnCurrentChannelChanged, this, _1));
     LLVoiceClient::addObserver(this);
 }
 
diff --git a/indra/newview/llviewerobjectlist.cpp b/indra/newview/llviewerobjectlist.cpp
index a917e741e0..5989c026c1 100644
--- a/indra/newview/llviewerobjectlist.cpp
+++ b/indra/newview/llviewerobjectlist.cpp
@@ -450,7 +450,7 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 
     LLViewerObject *objectp;
     S32         num_objects;
-    U32         local_id;
+    U32         local_id = 0;
     LLPCode     pcode = 0;
     LLUUID      fullid;
     S32         i;
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index ee829b08c1..06a84edbea 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -621,6 +621,7 @@ void LLViewerShaderMgr::setShaders()
         LLError::setDefaultLevel(LLError::LEVEL_DEBUG);
         loadBasicShaders();
         LLError::setDefaultLevel(lvl);
+        gGLManager.printGLInfoString();
         LL_ERRS() << "Unable to load basic shader " << shader_name << ", verify graphics driver installed and current." << LL_ENDL;
         reentrance = false; // For hygiene only, re-try probably helps nothing
         return;
diff --git a/indra/newview/llvoicechannel.cpp b/indra/newview/llvoicechannel.cpp
index 55769f567b..cf128f381a 100644
--- a/indra/newview/llvoicechannel.cpp
+++ b/indra/newview/llvoicechannel.cpp
@@ -80,9 +80,8 @@ LLVoiceChannel::~LLVoiceChannel()
     if (sCurrentVoiceChannel == this)
     {
         sCurrentVoiceChannel = NULL;
-        // Must check instance exists here, the singleton MAY have already been destroyed.
-        LLVoiceClient::removeObserver(this);
     }
+    LLVoiceClient::removeObserver(this);
 
     sVoiceChannelMap.erase(mSessionID);
 }
diff --git a/indra/newview/llvoiceclient.cpp b/indra/newview/llvoiceclient.cpp
index 75ee26bba6..70c1fbd5a8 100644
--- a/indra/newview/llvoiceclient.cpp
+++ b/indra/newview/llvoiceclient.cpp
@@ -179,7 +179,11 @@ void LLVoiceClient::init(LLPumpIO *pump)
 
 void LLVoiceClient::userAuthorized(const std::string& user_id, const LLUUID &agentID)
 {
-    gAgent.addRegionChangedCallback(boost::bind(&LLVoiceClient::onRegionChanged, this));
+    if (mRegionChangedCallbackSlot.connected())
+    {
+        mRegionChangedCallbackSlot.disconnect();
+    }
+    mRegionChangedCallbackSlot = gAgent.addRegionChangedCallback(boost::bind(&LLVoiceClient::onRegionChanged, this));
     LLWebRTCVoiceClient::getInstance()->userAuthorized(user_id, agentID);
     LLVivoxVoiceClient::getInstance()->userAuthorized(user_id, agentID);
 }
@@ -629,8 +633,14 @@ bool LLVoiceClient::voiceEnabled(bool no_cache)
 
 void LLVoiceClient::setVoiceEnabled(bool enabled)
 {
-    LLWebRTCVoiceClient::getInstance()->setVoiceEnabled(enabled);
-    LLVivoxVoiceClient::getInstance()->setVoiceEnabled(enabled);
+    if (LLWebRTCVoiceClient::instanceExists())
+    {
+        LLWebRTCVoiceClient::getInstance()->setVoiceEnabled(enabled);
+    }
+    if (LLVivoxVoiceClient::instanceExists())
+    {
+        LLVivoxVoiceClient::getInstance()->setVoiceEnabled(enabled);
+    }
 }
 
 void LLVoiceClient::updateMicMuteLogic()
diff --git a/indra/newview/llvoiceclient.h b/indra/newview/llvoiceclient.h
index 4ab6355db1..33ed6b969d 100644
--- a/indra/newview/llvoiceclient.h
+++ b/indra/newview/llvoiceclient.h
@@ -462,7 +462,7 @@ public:
     bool getUserPTTState();
     void toggleUserPTTState(void);
     void inputUserControlState(bool down);  // interpret any sort of up-down mic-open control input according to ptt-toggle prefs
-    void setVoiceEnabled(bool enabled);
+    static void setVoiceEnabled(bool enabled);
 
     void setUsePTT(bool usePTT);
     void setPTTIsToggle(bool PTTIsToggle);
@@ -550,6 +550,7 @@ protected:
     LLPumpIO *m_servicePump;
 
     boost::signals2::connection  mSimulatorFeaturesReceivedSlot;
+    boost::signals2::connection  mRegionChangedCallbackSlot;
 
     LLCachedControl<bool> mVoiceEffectEnabled;
     LLCachedControl<std::string> mVoiceEffectDefault;
diff --git a/indra/newview/llvoicevivox.cpp b/indra/newview/llvoicevivox.cpp
index 16a48e0d82..19c6b44183 100644
--- a/indra/newview/llvoicevivox.cpp
+++ b/indra/newview/llvoicevivox.cpp
@@ -2125,23 +2125,48 @@ bool LLVivoxVoiceClient::waitForChannel()
                     llcoro::suspend();
                     break;
                 }
-                sessionStatePtr_t joinSession = mNextAudioSession;
-                mNextAudioSession.reset();
-                mIsProcessingChannels = true;
-                if (!runSession(joinSession)) //suspends
+
+                try
                 {
-                    mIsProcessingChannels = false;
-                    LL_DEBUGS("Voice") << "runSession returned false; leaving inner loop" << LL_ENDL;
-                    // break; <FS:Beq/> Fix broken state model
+                    sessionStatePtr_t joinSession = mNextAudioSession;
+                    mNextAudioSession.reset();
+                    mIsProcessingChannels = true;
+                    if (!runSession(joinSession)) //suspends
+                    {
+                        mIsProcessingChannels = false;
+                        LL_DEBUGS("Voice") << "runSession returned false; leaving inner loop" << LL_ENDL;
+                        // break; <FS:Beq/> Fix broken state model
+                    }
+                    else
+                    {
+                        mIsProcessingChannels = false;
+                        LL_DEBUGS("Voice")
+                            << "runSession returned true to inner loop"
+                            << " RelogRequested=" << mRelogRequested
+                            << " VoiceEnabled=" << mVoiceEnabled
+                            << LL_ENDL;
+                    }
                 }
-                else
+                catch (const LLCoros::Stop&)
                 {
-                    mIsProcessingChannels = false;
-                    LL_DEBUGS("Voice")
-                        << "runSession returned true to inner loop"
-                        << " RelogRequested=" << mRelogRequested
-                        << " VoiceEnabled=" << mVoiceEnabled
+                    LL_DEBUGS("LLVivoxVoiceClient") << "Received a shutdown exception" << LL_ENDL;
+                }
+                catch (const LLContinueError&)
+                {
+                    LOG_UNHANDLED_EXCEPTION("LLVivoxVoiceClient");
+                }
+                catch (...)
+                {
+                    // Ideally for Windows need to log SEH exception instead or to set SEH
+                    // handlers but bugsplat shows local variables for windows, which should
+                    // be enough
+                    LL_WARNS("Voice") << "voiceControlStateMachine crashed in state VOICE_CHANNEL_STATE_PROCESS_CHANNEL"
+                        << " mRelogRequested " << mRelogRequested
+                        << " mVoiceEnabled " << mVoiceEnabled
+                        << " mIsProcessingChannels " << mIsProcessingChannels
+                        << " mProcessChannels " << mProcessChannels
                         << LL_ENDL;
+                    throw;
                 }
             }
 
diff --git a/indra/newview/llvoicewebrtc.cpp b/indra/newview/llvoicewebrtc.cpp
index 91ffe67de7..46f9cbff22 100644
--- a/indra/newview/llvoicewebrtc.cpp
+++ b/indra/newview/llvoicewebrtc.cpp
@@ -258,6 +258,8 @@ void LLWebRTCVoiceClient::cleanupSingleton()
     }
     cleanUp();
     sessionState::clearSessions();
+
+    mStatusObservers.clear();
 }
 
 //---------------------------------------------------
@@ -403,8 +405,9 @@ void LLWebRTCVoiceClient::notifyStatusObservers(LLVoiceClientStatusObserver::ESt
     LL_DEBUGS("Voice") << "( " << LLVoiceClientStatusObserver::status2string(status) << " )"
                        << " mSession=" << mSession << LL_ENDL;
 
+    bool in_spatial_channel = inSpatialChannel();
     LL_DEBUGS("Voice") << " " << LLVoiceClientStatusObserver::status2string(status) << ", session channelInfo "
-                       << getAudioSessionChannelInfo() << ", proximal is " << inSpatialChannel() << LL_ENDL;
+                       << getAudioSessionChannelInfo() << ", proximal is " << in_spatial_channel << LL_ENDL;
 
     mIsProcessingChannels = status == LLVoiceClientStatusObserver::STATUS_JOINED;
 
@@ -412,7 +415,7 @@ void LLWebRTCVoiceClient::notifyStatusObservers(LLVoiceClientStatusObserver::ESt
     for (status_observer_set_t::iterator it = mStatusObservers.begin(); it != mStatusObservers.end();)
     {
         LLVoiceClientStatusObserver *observer = *it;
-        observer->onChange(status, channelInfo, inSpatialChannel());
+        observer->onChange(status, channelInfo, in_spatial_channel);
         // In case onError() deleted an entry.
         it = mStatusObservers.upper_bound(observer);
     }
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 89c30dcd4d..a0a36ecf5f 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -6835,6 +6835,7 @@ U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace
                     if (gltf_mat->mAlphaMode == LLGLTFMaterial::ALPHA_MODE_BLEND)
                     {
                         registerFace(group, facep, LLRenderPass::PASS_ALPHA);
+                        is_alpha = true;
                     }
                     else if (gltf_mat->mAlphaMode == LLGLTFMaterial::ALPHA_MODE_MASK)
                     {