Ah, never told the non german speakers what bit is missing in the statutes.
It is the bit how members can Sing Out of the association, immediately. (They can sign out by not paying the members fee, but this would happen in spring of the next year, automatically).
This bit is so small, that everyone who checked the statutes (6 pairs of eyes with experience) missed that it is missing. But of course, it is understandable, that it should be there.