Resolved Input sources floating menu disappeared

[Ultrich]

When switching between input sources using keyboard shortcuts, in the center of the screen appear a floating menu with a list of sources.
I was playing around preferences and it stops to appear. It's very inconvenient in a full screen mode, but I didn't manage to get it back and cannot find information on how to restore this feature. Does somebody know how to manage it? Thanks.

 

[Ultrich]

Actually, I haven't found what exactly is responsible for this problem. I had no choice other than go back to the default settings and change settings step by step.