Hi @Dennis Dunbar, sorry, I didn't even notice your name, I went straight to the issue.
I just recently updated to Sonoma (now at 14.7) this past week. I've not seen anything like this. I was on 13.6.1 until my update.
When I first read the issue, I thought for sure you were on a Network or NAS drive, I've seen reports like this from them. Since you are on local drives, that rules that out.
Other than the following, I do not know what might be happening. I've not witnessed that at all myself. Nonetheless, later today, I'll be doing some Bridge-based work, and I'll keep my eye out for it.
Idea #1: Purge your Cache for the folder. That's my #1 thing to try when a folder is acting dumb.
Idea #2: rebuild your Bridge's Preferences/Settings. That's my #2 thing
Idea #3: When something really dumb is taking place on my computer, I run ""OS" Cache Cleaner" from NorthernSoftworks.com. All it does is a series of basic maintenance processes that are built into the Mac anyway. Supposedly, these are supposed to be run by the Mac itself when asleep, but in my experience, my Mac must have been on a bender and slept through that process a few times. This runs them all anyway. At least once a year, it clears up an issue for me. With every new Mac OS update, the software is updated to work with the new version. They offer a small discount if you update the Cache Cleaner every year (like I do). Otherwise, they charge a $10 fee for the application. However, you do have a 10-day free trial with full capabilities. So, if it doesn't work, you're no worse off. Even though you are still on Sonoma, you will need to get the Sequoia version, as all versions are backward compatible.
I would run All of the functions in the Maintenance Tab, and I'd also do All of the Caches with Medium Cleaning.
I've been using this app since 2007. I cannot promise that it fixes all problems or, more specifically, your issue, but even if it helps me once a year, it's worth it. Either way, try my "Ideas #1 & #2 first.
Let me know how it works out.
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