I see an empty drop down box where the language code of the current keyboard layout should be.
To reproduce the bug: Lock screen or log out and log in again.
I also get the same behavior on the lock screen at the time when I try to log in with my password:
After I tried the workaround (below) the language code on the login screen disappeared as soon as I typed the first character of my password.
Workaround (not permanent): Switching with keyboard (Super+space) or mouse.
System info: Ubuntu 18.04.1 LTS, GNOME 3.28.2.
Please indicate in the bug report if also affects you.
Best Answer
A fix was released, already verified on Cosmic and Bionic.
EnableProposed
Until is added to normal repos, to enable them on Bionic (18.04) as said here, follow these instructions to enable the proposed archive, which basically say:
Add to
/etc/apt/preferences.d/proposed-updates
If
sudo apt-get upgrade -s
return any package, something went wrong.sudo aptitude -t bionic-proposed
Please test it and eventually suggest changes to this post. If everything went OK upvote and share your love with the developers.