The same thing is currently happening to me
Here is my monitor layout:

I have tried to save the config with kps at the top left of the right monitor, and at the center of the right monitor, but the window still loads at the top of the left monitor, where it is unreachable
Version 8.9, Kubuntu 24.10, KDE Plasma 6.1.5
Originally posted by @EnderiteFox in #94