v11.0 Beta 4 Win 10 x64

Taskbar Setup:
Mon 1 Windows Taskbar
Mon 2 DF Taskbar

Come across some odd behaviour for a specfic program (winamp.exe) after updating to v11.0 Beta 4.

When I launch Winamp, the taskbar entry shows in the Windows Taskbar on Mon1, if I drag/move Winamp to Mon2, the taskbar remains on Mon1.

Other programs are functioning as expected (drag Firefox to Mon 2, taskbar object moves to DF Taskbar on mon 2 etc)

I've tried dragging with the mouse and using the Ctrl-Win-X shortcut, the program moves but not the taskbar.
I also have an existing trigger set, to move it to Mon2 and specific position on the screen, and that works fine for the UI, but the taskbar still remains on Mon1.

Taskbar Settings (image tag not working for some reason?):
https://imgur.com/a/P4vFzQk

Taskbar Shortcuts:
https://imgur.com/a/6dsyhjo

UPDATE: I have just rolled back to Beta 3 and this issue doesnt occur

I'm experiencing the same thing with Discord.