Weird language bug when asking for password?

[TobleroneKing]

Hey, I have been looking around for a solution to this bug where everytime an admin password is required, some japanese text comes up. I can't seem to find a fix for this, and it has been killing the OCD part of me for a long time. The problem is best explained through this screenshot:

 

[satcomer]

The easiest way to clear your font cache is to boot into Safe mode then boot back into regular mode. This should clear your font cache.