Attempted to fix incorrect display of about view for bots with forum.

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -4718,6 +4718,9 @@ void HistoryInner::refreshAboutView(bool force) {
 			_aboutView->refreshRequests() | rpl::on_next([=] {
 				updateBotInfo();
 			}, _aboutView->lifetime());
+			_aboutView->destroyRequests() | rpl::on_next([=] {
+				refreshAboutView(true);
+			}, _aboutView->lifetime());
 			_aboutView->sendIntroSticker() | rpl::start_to_stream(
 				_sendIntroSticker,
 				_aboutView->lifetime());

Telegram/SourceFiles/history/view/history_view_about_view.cpp

@@ -610,6 +610,14 @@ AboutView::AboutView(
 	not_null<ElementDelegate*> delegate)
 : _history(history)
 , _delegate(delegate) {
+	if (_history->peer->isBot() && _history->peer->isForum()) {
+		_history->session().data().newItemAdded(
+		) | rpl::on_next([=](not_null<HistoryItem*> item) {
+			if (item->history() == _history) {
+				_destroyRequests.fire({});
+			}
+		}, lifetime());
+	}
 }
 
 AboutView::~AboutView() {
@@ -632,7 +640,13 @@ HistoryItem *AboutView::item() const {
 }
 
 bool AboutView::aboveHistory() const {
-	return !_history->peer->isBot() || !_history->isForum();
+	if (!_history->peer->isBot() || !_history->isForum()) {
+		return true;
+	}
+	const auto info = _history->peer->asUser()->botInfo.get();
+	return !(info->canManageTopics
+		&& info->startToken.isEmpty()
+		&& (!_history->isEmpty() || _history->lastMessage()));
 }
 
 bool AboutView::refresh() {
@@ -781,6 +795,10 @@ rpl::producer<> AboutView::refreshRequests() const {
 	return _refreshRequests.events();
 }
 
+rpl::producer<> AboutView::destroyRequests() const {
+	return _destroyRequests.events();
+}
+
 rpl::lifetime &AboutView::lifetime() {
 	return _lifetime;
 }

Telegram/SourceFiles/history/view/history_view_about_view.h

@@ -34,6 +34,7 @@ public:
 	[[nodiscard]] auto sendIntroSticker() const
 		-> rpl::producer<not_null<DocumentData*>>;
 	[[nodiscard]] rpl::producer<> refreshRequests() const;
+	[[nodiscard]] rpl::producer<> destroyRequests() const;
 	[[nodiscard]] rpl::lifetime &lifetime();
 
 	int top = 0;
@@ -73,6 +74,7 @@ private:
 	bool _commonGroupsRequested = false;
 	std::vector<not_null<PeerData*>> _commonGroups;
 	rpl::event_stream<> _refreshRequests;
+	rpl::event_stream<> _destroyRequests;
 	rpl::lifetime _lifetime;
 
 };