Stuck on synching library full progress bar

MacOS 12.6.8 (Monterey) with Audirvana 3.5.50

Recently, I noticed that when Audirvana syncs the library, the progress bar on the top of the screen will stay there, even when the bar is completely blue (100%)

I have to close and reopen Audirvana, then the sync progress bar goes away.
That is the only way I can sync again if I make any changes.

It never used to behave this way, and I can’t think of any changes I made.
I ran all 3 library maintenances, and nothing helps.

Any suggestions?