There is one more regression after recent changes to QTabBar, previously reported issue here: https://bugreports.qt.io/browse/QTBUG-113345

Using a vertical tabbar with icons and text, the items above the current index is not shown if the current index is set to other than 0 before the window is drawn.

The issue first occur in Qt 6.5.1, same issue with the latest code from the dev branch.

I'm using a custom tabbar similar to the one in Qt Creator: https://github.com/strawberrymusicplayer/strawberry/blob/master/src/widgets/fancytabwidget.cpp

If I move setCurrentIndex() to the showEvent() the issue does not occur.

I'll attach a video showing the problem.

vhilshei