When the MusicBee's window is in the foreground, even if you left-click on the MusicBee's taskbar button, the window is not minimized like other applications.
MusicBee 3.1.6466
Options are all default
Windows 7 64bit
This problem did not occur MusicBee v2.5.5804 or lower.
This problem occurred in Version 3 or later, which continues until v3.1.6466.