Backspace deletes only part of a unicode character

I tried that and it doesn’t change anything, but I’ve noticed a conflict between the System Settings and Manjaro Settings Manager, take a look:

When I click at “Modify” (yellow rectangle, as a part of System Settings), even when I select English, this setting always remains at “Croatian”. The Manjaro Settings Manager (from the right) shows the correct distribution of languages, but the system doesn’t follow those settings.

Since this is a separate issue, I created a new thread here: