Thank you for taking the time to work on this. With the latest patch, the buttons appear after system reboot. Next if you open MusicBee - do NOT start music playing - wait for the taskbar pop-up - close MusicBee, the buttons begin to disappear on the third or fourth load. If you START playing music and then wait for the pop-up, buttons can start to disappear on 8-15 program load. I don't know how it actually works, but it looks like this taskbar popup is being cached somewhere or there is some kind of race condition.