fix ChannelListView not retrying error on connection recovered [#504](https://github.com/GetStream/stream-chat-flutter/issues/504)

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat_flutter_core/lib/src/channels_bloc.dart

@@ -146,6 +146,8 @@ class ChannelsBlocState extends State<ChannelsBloc>
         _paginationEnded = true;
       }
     } catch (e, stk) {
+      // reset loading controller
+      _queryChannelsLoadingController.sink.add(false);
       if (_channelsController.hasValue) {
         _queryChannelsLoadingController.addError(e, stk);
       } else {

packages/stream_chat_flutter_core/lib/src/lazy_load_scroll_view.dart

@@ -85,6 +85,7 @@ class _LazyLoadScrollViewState extends State<LazyLoadScrollView> {
       final extentBefore = notification.metrics.extentBefore;
       final extentAfter = notification.metrics.extentAfter;
       final scrollingDown = _scrollPosition < pixels;
+      _scrollPosition = pixels;
 
       if (scrollingDown) {
         if (extentAfter <= scrollOffset) {
@@ -97,8 +98,6 @@ class _LazyLoadScrollViewState extends State<LazyLoadScrollView> {
           return true;
         }
       }
-
-      _scrollPosition = pixels;
     }
     if (notification is OverscrollNotification) {
       if (notification.overscroll > 0) {

packages/stream_chat_flutter_core/lib/src/message_search_bloc.dart

@@ -98,6 +98,8 @@ class MessageSearchBlocState extends State<MessageSearchBloc>
         _queryMessagesLoadingController.add(false);
       }
     } catch (e, stk) {
+      // reset loading controller
+      _queryMessagesLoadingController.add(false);
       if (_messageResponses.hasValue) {
         _queryMessagesLoadingController.addError(e, stk);
       } else {

packages/stream_chat_flutter_core/lib/src/users_bloc.dart

@@ -96,6 +96,8 @@ class UsersBlocState extends State<UsersBloc>
         _queryUsersLoadingController.add(false);
       }
     } catch (e, stk) {
+      // reset loading controller
+      _queryUsersLoadingController.add(false);
       if (_usersController.hasValue) {
         _queryUsersLoadingController.addError(e, stk);
       } else {