fix chat

yobble/Views/Chat/PrivateChatView.swift

@@ -98,6 +98,8 @@ struct PrivateChatView: View {
         .onChange(of: viewModel.isInitialLoading) { isLoading in
             if isLoading {
                 hasPositionedToBottom = false
+            } else if !viewModel.messages.isEmpty {
+                scrollToBottomTrigger = .init()
             }
         }
         .safeAreaInset(edge: .bottom) {