I haven't had time to check that but if you are sure then please report it at https://issues.joomla.org/However, I also confirm the behaviour you identified; clicking the toggle switch for 'hide publishing tab" actually hides the Meta Data tab in the front end, but leaves the Publishing tab visible.
Addendum
Just checked and confirmed so I have started a tracker for it https://issues.joomla.org/tracker/joomla-cms/44118
Statistics: Posted by Webdongle — Fri Sep 20, 2024 8:24 am