@Amire80: apparently the page moved out of the user namespace, but at least the German translation still had the “User” in it until I edited it just now, even though it was marked as 100% complete, not outdated. Do you know if that’s a known limitation of the Translate extension, that the title translation is not marked as outdated on page move? (Or should I have left the “User” out of the translation in the first place?)
Topic on Talk:Global templates/Proposed specification, short version
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It's probably saved as just a string, and not really a namespace, so it wasn't a big problem. Thanks for fixing it, of course.
Maybe @Nikerabbit can say more, however.