Strange kdialog windows positions

My kdialog windows are launching in odd/wrong positions.
For instance, if I mount a Luks encrypted USB, the system tray request to mount is in the lower left of the desktop but the kdialog request for a password opens in the top-right (0,0) - on a 32" screen this is a real pain.
If I try and delete a file in Dolphin, the confirm dialog always appears at 0,0.

This is only for one particular user. Is there some KDE configuration file I can get to that may be causing this?

Operating System: openSUSE Tumbleweed 20250515
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0
Kernel Version: 6.14.6-1-default (64-bit)
Graphics Platform: Wayland

does

settings > window behavior > advanced > window placement

have any effect?

No. but thanks.
It’s not the application windows that are the problem, just the dialogs - password entry, confirmation etc.
They all used to open in sensible places i.e. centre or near the centre of the main application or centre of the screen. Now they seem to open at odd places, nowhere near where they used to.
As I say this is only for one specific user account (mine), for other users the dialog behaviour is as it always was hence my question seeking a KDE/Plasma configuration file that might control this.

you could try this to isolate the problem


# brute force troubleshooting...
mv ~/.config ~/.configBORKED
# logout and log back in again to force plasma to recreate the folder with default settings
dolphin --split ~/.config ~/.configBORKED
# copy back half of the BORKED folder contents at a time and relog to see if issue returns
# if it does, then delete the folder again, relog, and only copy half of that previous half
# repeat until the culprit is found, then finally, copy back everything BUT that culprit bit