Hey Steven, not sure if anyone has pointed this out yet but I have an issue with the new "Hide Panels Header Bar" feature.
I would love to use this feature, however it also hides the toggle at the top of my Right Sidebar. I should be able to stack the tabs via the Panel Layout tool and still toggle between Lyrics and Track Details on the sidebar even though the Panels Header Bar is hidden.. Minimum: consider adding a "Toggle Between Right Sidebar Tabs" hotkey slot so that I can hide the panel and still swap between the displayed info.
Keep up the good work, MusicBee 3.0 is an incredible piece of software!