I tested the update, and the translation is still the old one. The problem is that grub-install is not automatically run after the language pack update, so /boot/grub/locale/de.mo is still out of date. After running "grub-install /dev/sda" it works.
I tested the update, and the translation is still the old one. The problem is that grub-install is not automatically run after the language pack update, so /boot/grub/ locale/ de.mo is still out of date. After running "grub-install /dev/sda" it works.