How were you able to edit the name and description, we do not make them editable, you need to rework prompts in other languages, so allowing you to simply rename is not ideal.
For now the way of working around it:
Disable the default english person
Create a new persona - copy and translate system prompt, ensure all commands are selected
And you will have an excellently working German persona.
EDIT… oh … I see the bug … tricky, will add a bypass.