Favorite folders cannot be unmarked
(Note: This is an old issue, there are recommendations how to solve it, incident reports etc., but none of them work for me, see https://community.adobe.com/t5/lightroom-classic-bugs/p-favorite-folders-cannot-be-unmarked/idi-p/12664212 or https://community.adobe.com/t5/lightroom-classic-discussions/deaktivate-marking-of-a-favorit-folder/m-p/12088812#M233242.
Either this bug was never fixed, or re-introduced with newer versions. Of course this could also be a PEBKAC subject ;-))
Windows 11 Home, Lightroom Classic 12.4.
I am not able to unmark favorite folders in the library view (key G). If I do so, I do get the option again to mark the folder as favorite again (hence the software did something!), BUT the asterisk/star does not vanish, AND it is still shown if I filter for favorite folders only ("Nach Ordnerfavoriten filtern").
German screenshots: "Markierung als Favorit aufheben" = unmark as favorit

Almost nothing happens, folder "2019" still has an asterisk:

But it now offers the "Als Favorit markieren" option = mark as favorit:

