diff --git a/Telegram/SourceFiles/info/info_wrap_widget.cpp b/Telegram/SourceFiles/info/info_wrap_widget.cpp
index c0ea68dcb..303313308 100644
--- a/Telegram/SourceFiles/info/info_wrap_widget.cpp
+++ b/Telegram/SourceFiles/info/info_wrap_widget.cpp
@@ -586,7 +586,7 @@ bool WrapWidget::showInternal(
 		not_null<Window::SectionMemento*> memento,
 		const Window::SectionShow &params) {
 	if (auto infoMemento = dynamic_cast<Memento*>(memento.get())) {
-		if (infoMemento->stackSize() > 1) {
+		if (!_controller || infoMemento->stackSize() > 1) {
 			return false;
 		}
 		auto content = infoMemento->content();
@@ -606,10 +606,14 @@ bool WrapWidget::showInternal(
 std::unique_ptr<Window::SectionMemento> WrapWidget::createMemento() {
 	auto stack = std::vector<std::unique_ptr<ContentMemento>>();
 	stack.reserve(_historyStack.size() + 1);
-	for (auto &stackItem : _historyStack) {
+	for (auto &stackItem : base::take(_historyStack)) {
 		stack.push_back(std::move(stackItem.section));
 	}
 	stack.push_back(_content->createMemento());
+
+	// We're not in valid state anymore and supposed to be destroyed.
+	_controller = nullptr;
+
 	return std::make_unique<Memento>(std::move(stack));
 }
 
diff --git a/Telegram/SourceFiles/mainwidget.cpp b/Telegram/SourceFiles/mainwidget.cpp
index 21eebce69..cdf19e3a1 100644
--- a/Telegram/SourceFiles/mainwidget.cpp
+++ b/Telegram/SourceFiles/mainwidget.cpp
@@ -3613,6 +3613,7 @@ void MainWidget::updateThirdColumnToCurrentPeer(
 		if (!_stack.empty() && _thirdSection) {
 			_stack.back()->setThirdSectionMemento(
 				_thirdSection->createMemento());
+			_thirdSection.destroy();
 		}
 	};
 	auto params = Window::SectionShow(