Hey thank you for your quick reply and excuse my late answer.
The table always had a description. This does not cause the problem.
I observed the phenomenon and made the following observation:
It seems like the changes I make are saved after all but will only be shown to logged in users. Some time later the changes were also visible for other users.
I hope that helps a little.
Thank you so much for your quick help. It didn’t come to my mind that the problem could be solely caused by a typo.
Best regards
Benjamin