Login to any DE fails after VNC connectoin


Installed 13.2 and all works fine with local login.

Installed VNC for ‘one time sessions’ and that works well too.
connects, enter password and get the login screen.
Login accepts correct password, and shows failed login on the wrong password

However, a correct, accepted login to any DE (I normally use KDE) does nothing, green background remains and after a few minutes, the login dialog reappears.

A local login works normally.

Where to look?
Ideas to fix?

Have fun,