QScrollArea performance regression

I'm seeing huge performance issues after commit https://code.qt.io/cgit/qt/qtbase.git/commit/src/widgets/widgets/qscrollarea.cpp?id=6c4dc722cb9bf765904feefff4fb00bdb0b3dc9f

Particularity noticeable on Windows, but it's at times noticeable on Linux too, especially if it's on an older machine.

Here is an example:

Strawberry compiled with Qt 6.2.1.
https://files.jkvinge.net/temp/StrawberrySetup-1.0.0.37.g5cb88efc-Qt6-x64_BROKEN_SCROLL.exe

If you switch between the Collection and Context tab, it completely freezes the whole player, if you resize the context with the lyrics, it's really sluggish.

Recompiled Qt 6.2.1 with the commit reverted, everything works.

https://files.jkvinge.net/temp/StrawberrySetup-1.0.0.37.g5cb88efc-Qt6-x64_SCROLL_WORKS.exe