Jeesh! OK, the one big difference is that you're on Big Sur and I'm on Catalina. (I tend to wait a long time to update to new OSs becuase I try to avoid the "growing pains" period.)
It MAY be due to, or related to, Big Sur.
You state that this started over the past couple of weeks. The obvious question is what happened a couple of weeks ago?
As far as things to try, here are several:
1) Force the re-caching of the folder: go to Tools (menu) -> Cache... -> Purge Cache for folder (the folder you are working on)
If that doesn't work, than try rebuilding your Bridge's Preferences
https://helpx.adobe.com/photoshop/using/adobe-dng-converter.html
If that doesn't work, than you can always go into the Finder, rename the folder there and go back to Bridge. This is obviously a work-around and should NOT be necessary. However, with over 30 years working with Macs, the choice is do you want to get the job done or do you want to get the job done the way it's supposed to be done.
Meanwhile, if this is not working, please go to:
https://adobebridge.uservoice.com
and make a formal bug complaint. This should be working.
Let me know what you find out here, I'm curios.