An explanation for them not sending it to Germany could be that the localization team for the German region, probably being more aware of such nuances, spotted it and removed it whereas those who did the localization for other regions just didn’t spot it, so it slipped through.

There could be arguments about communication between teams but, honestly, localization teams don’t really need to communicate with one another so it isn’t surprising that they didn’t.

Most likely it actually is a “oops we fucked up” situation.