I have edited wiki post in stable update announcement to include this:
Xfce has inconsistent themes for Qt applications
Qt 6 is now default but some apps are still using Qt 5
To restore the look of QT apps after this update
pamac install kvantum-qt5
I also created the original known issue post in Testing update 2024-03-16 based on comments from pheiduck and yourself:
IMO there should have been a notice in post #1 for KDE users:
KDE users are recommended to log out of desktop and update via TTY
Any other issues could be dealt with in post #2 faster if there wasn’t a KDE dogpile
A long delay in stable updates is always likely to happen when a new ISO is due for release
But a delay also allows more time to draft update announcement and copy Known Issues from Testing Branch