I was once involved in building the UI for a video game. There was some kind of labels for baseic color selection ... "czerwony" instead of "red" broke everything :F

yes, this can cause even major-ish UI issues - like in android where this happens:

cut,copy,paste auschneiden,kopieren,einfügen

this can break the UI so you have scroll on a popup just to copy a piece of text because google put "copy" last in the selection.