I am just experiencing an odd problem that sounds like it is related to redwing's; it began immediately after updating MusicBee.exe from 3.2.6646 to 3.2.6650. Etiology:
Instead of assigning a picture to a Radio Station entry via the Edit function, I have a custom "no image" replacement image displayed in the Track Information Panel for all radio stations via an xml mod to the skin (Maya Blue), which normally displays fine for every station. Upon going from 3.2.6646 to 3.2.6650, when first launched MusicBee will display the custom image when a station is first selected; upon changing the station, and for every station change after that, only a black empty field is displayed instead of the custom image. Exiting MusicBee and re-launching reproduces the behavior. When reverting back to 3.2.6646, the problem vanishes, and the custom image displays normally for every station.
The problem does not occur in the Now Playing panel, only the Track Information panel.
However, unlike redwing, when I am playing different tracks in my regular file music Library, the expected image (cover artwork if present, custom "no image" if not) shows normally when changing between the tracks.
Must be due to some change made between 3.2.6646 and 3.2.6647-6650.