I was advised to post here when I posted on another Adobe forum.
Just curious; what was the other forum if it wasn’t community.adobe.com?
Here’s a list of Office Hours…
It does sound, based on your description, like a security issue 
You could:
- Try seeing if the same thing happens with the CEP HTML Test Extension.
- See if the same thing happens in another Creative Cloud app (like Illustrator)
- Check if the problem exists with a prior version of Bridge as well
- See if you have the same problem on another computer or a virtual machine.
- In prior macOS versions you could de-quarantine using an
xattrcommand:xattr -d com.apple.quarantine /path/to/file
I’d recommend reaching out to wwds@adobe.com with the version numbers and system versions you’ve tried, as well as “steps to reproduce” the problem.