Cannot enter combined characters in the password field
Since the update to gdm-42.0 (on Arch Linux) entering combined characters (like for example `+a for à) does not work any more. This used to happend in gnome shell in the past when ibus wasn't started, but in this case this still works in shell dialogs as well as on the lock screen.
(This can be worked around using the on-screen keyboard to enter the special characters.)