Popup menus suddenly showing up right-aligned

[tageule]

Hello,

I have been working on this for hours, but I didn't a real solution yet. The problem is that popup menus (except from Mozilla's or GTK+ based programs, which show a menu of their own) show up in such a way that the menu is always right-aligned to the menu point it was opened from, even when there is enough space that it could unfold to the right side. As I have been used to left-aligned menus for about 14 years, this is very annoying.

Example screenshot 1

Example screenshot 2

I already figured out that (re)setting the registry key HKCU\Control Panel\Desktop\MenuDropAlignment helped others restoring the usual behavior, but this one didn't exist and manually setting to "0" didn't help either. Any configuration tools I used so far also changed just the value of MenuDropAlignment according to Process Monitor.

The problem seems to be connected to my user account because it doesn't happen on other ones.

Does some have some useful tips so I don't have to do a complicated transfer to a new account?

TIA,

tageule

Ref.: I already asked about this here (in German).

[tageule]

This thread can be closed now. After some more time I realized that restoring a backup image from 30th December and installing/re-copying the missing items was much easier than messing around with System Restore to address the problem.