Fix video full-window toggle in windowed mode.

Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp

@@ -1886,9 +1886,18 @@ void OverlayWidget::contentSizeChanged() {
 }
 
 void OverlayWidget::recountSkipTop() {
-	const auto bottom = (!_streamed || !_streamed->controls)
-		? height()
-		: (_streamed->controls->y() - st::mediaviewCaptionPadding.bottom());
+	const auto controllerBottomNoFullScreenVideo = _groupThumbs
+		? _groupThumbsTop
+		: height();
+	// We need the bottom in case of non-full-screen-video mode
+	// to count correct _availableHeight in non-full-screen-video mode.
+	//
+	// Originally this is controls->y() - padding.bottom().
+	const auto bottom = (_streamed && _streamed->controls)
+		? (controllerBottomNoFullScreenVideo
+			- _streamed->controls->height()
+			- 2 * st::mediaviewCaptionPadding.bottom())
+		: height();
 	const auto skipHeightBottom = (height() - bottom);
 	_skipTop = _minUsedTop + std::min(
 		std::max(
@@ -1954,7 +1963,7 @@ void OverlayWidget::resizeContentByScreenSize() {
 		_h = _height;
 	}
 	_x = (width() - _w) / 2;
-	_y = _skipTop + (_availableHeight - _h) / 2;
+	_y = _skipTop + (useh - _h) / 2;
 	_geometryAnimation.stop();
 }
 
@@ -4016,7 +4025,7 @@ void OverlayWidget::refreshClipControllerGeometry() {
 		st::mediaviewControllerSize.height());
 	_streamed->controls->move(
 		(width() - controllerWidth) / 2,
-		(controllerBottom
+		(controllerBottom // Duplicated in recountSkipTop().
 			- _streamed->controls->height()
 			- st::mediaviewCaptionPadding.bottom()));
 	Ui::SendPendingMoveResizeEvents(_streamed->controls.get());