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I took action according to your advice. It works as expected.
Thank you for your quick reply. T. Sejimo

Hi, I had time to look into this problem. It was a mistake to give the possibility to hide the publish_tab!
(First of all, there was the idea to put all into other tabs, what for dummies is not needed, you only need the first tab, the rest should only be used, if you know what you are doing!)
Then somebody asked, how to hide this. But this is always needed. But you only can change things you have the right for.
(Probably there will come soon a little bugfix for this and the php8 problems)