Comment 133 for bug 1311316

>It's a dfferrent new bug. I think there is already a similar bug open. What
languages are you using? Please try to unlock after changing the language
in the keyboard indicator.

I use Icelandic. It has extra letters, such as þæðöÞÆÐÖ (and accented), over English (as it is a superset I never change to English layout) but as I said I'm not using those in my password. And this bug had just happened for the first time while getting no password prompt has happened many times. I changed to gnome-shell, at least to try out, so I do not expect the bug to happen there..