I recently updated and grabbed the Advanced Tagging Tools for MusicBee 3.5.8254 and now the Tab button no longer moves from one editable field to another (Title/Album/Artist/Album Artist...) in the middle panel list (I do not know what your label is for it). It just closes and saves after changes are made.
https://imgur.com/a/L2Maw2DI'm still learning the ins and outs of things here and am wondering how to fix this. I saw there's a Hotkeys section in Edit - Edit Preferences but I can't seem to get the Tab key to register as selected key if that's where I should go to fix this (I was using Edit: Save/Goto Next).