Window positions KDE/Plasma and TW

LS, Another issue with KDE/Plasma under TW since a recent update. Many windows are now starting in the center of the screen, instead of prior positions. Then again, some are still starting at the prior position on the display. This is rather annoying since I have to reposition windows every time when starting an utility or program. So, either many utilities and programs have lost the code to position their starting window at the prior positions, or KDE/Plasma has a bug. Anyone also? Regards, Frans.