display – Apple Music quits unexpectedly on big sur macbook pro w/external Monitor

I have a 2019 Macbook Pro with Big Sur 11.2.1. I have an external monitor connected via mini DP. When I try to move the Apple Music window to the external monitor, Music “Quits Unexpectedly”. Can anyone offer some other suggested troublshooting steps?

The Apple Communities thread is https://discussions.apple.com/thread/252048247?answerId=254539570022

Apple had me try to use a newly created user account without success. They passed me on to third level support, but they failed to keep their appointment.

Here is some info from the Problem Report for Music window:

Crashed Thread: 0 Music main Dispatch queue: com.apple.main-thread

Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Termination Signal: Illegal instruction: 4
Termination Reason: Namespace SIGNAL, Code 0x4
Terminating Process: exc handler (1399)

Application Specific Information:
dyld3 mode
Crashing on exception: The window has been marked as needing another Layout Window pass, but it has already had more Layout Window passes than there are views in the window.
<ITNSWindow: 0x7fc7a6e1ed20> 0x67e (1662) {{457, 1065}, {980, 400}} Music en