Description of problem:
When I want to login with gdm as Wayland session I can only do this when I was not logged in before. Otherwise - after typing my password - instead of the desktop I am again prompted to the gdm.

Version-Release number of selected component (if applicable):
gdm 3.18.2

How reproducible:
Logout from either standard GNOME or GNOME Wayland session and login with GNOME Wayland.

Steps to Reproduce:
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Actual results:
After entering password gdm comes again.

Expected results:
Desktop should start.

Additional info:
Workaround: Enter console Ctrl-Alt-F2, login and then
sudo systemctl isolate multi-user.target
sudo systemctl isolate graphical.target
After this you can login again.