So, while I am encountering this in Bridge, there seems to be some sort of Camera Raw dependency. I am unsure if the Camera Raw App is utilized by Bridge when creating the thumbnails, but I see how there is a possibility there is some shared code library used by both to handle the CR2 files.
What has me wondering if I am on the right path is that while I originally thought this was just with Bridge 12.0.2 I am now encountering this with my Bridge CS6 7.0. In the few articles I have read, it seems like CS6 and CC use different Camera Raw plugins, so I would think CS6 would have been isolated. Any thoughts on what driver/library/app is shared between CS6 and CC and what I can try reverting to? This is a new issue, as I have recently moved to CC (about a month ago) and my Bridge CS6 never showed this problem for many years.