Comment 4 for bug 762111

I switched from a USA to UK keyboard and had this problem but I think I have solved it.

First ensure that under "System Settings > Keyboard > Layouts" that "Separate layout for each window" is unchecked, then remove the USA keyboard and apply system-wide.

The other thing that was causing it to reappear for me was the login screen - ensure that the correct keyboard layout is selected when you log on.