Fixed: starting a group chat shouldn't show the section to fetch more messages.

src/app/chat/views/chat_item.nim

@@ -171,6 +171,13 @@ QtObject:
   proc muted*(self: ChatItemView): bool {.slot.} =
     return ?.self.chatItem.muted
 
+  proc joined*(self: ChatItemView): string {.slot.} = 
+    if self.chatItem.isNil: return ""
+    return $self.chatItem.joined
+
+  QtProperty[string] joined:
+    read = joined
+
   QtProperty[bool] muted:
     read = muted
     notify = mutedChanged

ui/app/AppLayouts/Chat/ChatColumn/Message.qml

@@ -283,13 +283,20 @@ Item {
         id: fetchMoreMessagesButtonComponent
         Item {
             id: wrapper
+            property int gapNowAndOldest: nextMessageIndex > -1 ? (Date.now() / 1000 - nextMsgTimestamp / 1000) : 0
+            property int gapNowAndJoined: Date.now() / 1000 - +chatsModel.channelView.activeChannel.joined / 1000
+
+            visible: {
+                return gapNowAndOldest < Constants.maxNbDaysToFetch * Constants.fetchRangeLast24Hours
+                        && gapNowAndJoined > Constants.maxNbDaysToFetch * Constants.fetchRangeLast24Hours
+                        && (chatsModel.activeChannel.chatType !== Constants.chatTypePrivateGroupChat || chatsModel.activeChannel.isMember)
+            }
             height: childrenRect.height + Style.current.smallPadding * 2
             anchors.left: parent.left
             anchors.right: parent.right
             Separator {
                 id: sep1
             }
-
             Loader {
                 id: fetchLoaderIndicator
                 anchors.top: sep1.bottom
@@ -302,7 +309,6 @@ Item {
                     height: 12
                 }
             }
-
             StyledText {
                 id: fetchMoreButton
                 font.weight: Font.Medium