Strange behavior restoring, resizing key editor window

Cubase 13.0.30, hiDPI mode on, Windows 11 , multi (two) monitors (2560x1440) and Systems scale 125% on both monitors.

I Encounter some very strange effects with some windows (Key editor notably) when restoring from maximized, clicking restore size button, and resizing a window. Sometimes quite confusing when working with Cubase.

Demonstration over here (in the end it shows the window paint behavior when resized, very strange):