stability improvements and race conditions

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/ChatModel.kt

@@ -331,6 +331,7 @@ object ChatModel {
         if (chatId.value == cInfo.id) {
           // Prevent situation when chat item already in the list received from backend
           if (chatItems.value.none { it.id == cItem.id }) {
+            chatItemsSectionArea[cItem.id] = ChatSectionArea.Bottom
             if (chatItems.value.lastOrNull()?.id == ChatItem.TEMP_LIVE_CHAT_ITEM_ID) {
               chatItems.add(kotlin.math.max(0, chatItems.value.lastIndex), cItem)
             } else {
@@ -379,6 +380,7 @@ object ChatModel {
             } else {
               cItem
             }
+            chatItemsSectionArea[ci.id] = ChatSectionArea.Bottom
             chatItems.add(ci)
             true
           }
@@ -610,6 +612,7 @@ object ChatModel {
     val cItem = ChatItem.liveDummy(chatInfo is ChatInfo.Direct)
     withContext(Dispatchers.Main) {
       chatItems.add(cItem)
+      chatItemsSectionArea[cItem.id] = ChatSectionArea.Bottom
     }
     return cItem
   }
@@ -617,6 +620,7 @@ object ChatModel {
   fun removeLiveDummy() {
     if (chatItems.value.lastOrNull()?.id == ChatItem.TEMP_LIVE_CHAT_ITEM_ID) {
       chatItems.removeLast()
+      chatItemsSectionArea.remove(ChatItem.TEMP_LIVE_CHAT_ITEM_ID)
     }
   }
 

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/ChatSections.kt

@@ -261,17 +261,23 @@ suspend fun apiLoadBottomSection(chatInfo: ChatInfo, rhId: Long?) {
   withContext(Dispatchers.Main) {
     val updatedItems = chatModel.chatItems.value.toMutableStateList()
     var insertIndex = updatedItems.size
+    var needsMerge = false
 
     for (cItem in chat.first.chatItems.asReversed()) {
       if (chatModel.chatItemsSectionArea[cItem.id] == null) {
         updatedItems.add(insertIndex, cItem)
         chatModel.chatItemsSectionArea[cItem.id] = ChatSectionArea.Bottom
       } else {
+        needsMerge = true
         chatModel.chatItemsSectionArea[cItem.id] = ChatSectionArea.Bottom
         insertIndex = max(0, insertIndex - 1)
       }
     }
 
+    if (needsMerge) {
+      updatedItems.associateTo(chatModel.chatItemsSectionArea) { it.id to ChatSectionArea.Bottom }
+    }
+
     chatModel.chatItems.replaceAll(updatedItems)
   }
 }

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/ChatView.kt

@@ -1005,7 +1005,7 @@ fun BoxScope.ChatItemsList(
 
   LaunchedEffect(Unit) {
     launch {
-      snapshotFlow { chatModel.chatId.value }
+      snapshotFlow { chatInfoUpdated.value.id }
         .distinctUntilChanged()
         .collect {
           if (revealedItems.value.isNotEmpty()) {

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chatlist/ChatListNavLinkView.kt

@@ -229,7 +229,7 @@ fun openLoadedChat(chat: Chat, chatModel: ChatModel, landingSection: ChatLanding
   chatModel.chatItems.replaceAll(chat.chatItems)
   chatModel.chatId.value = chat.chatInfo.id
   chatModel.chatItemsSectionArea.clear()
-  chat.chatItems.associateTo(chatModel.chatItemsSectionArea) { it.id to landingSectionToArea(landingSection) }
+  chatModel.chatItems.value.associateTo(chatModel.chatItemsSectionArea) { it.id to landingSectionToArea(landingSection) }
 }
 
 suspend fun apiLoadMessages(