The batch rename function is failing to rename any files that have been previewed in Bridge.
So when trying to batch rename all the files in a given folder, the first one tends to fail as it's auto started a preview, and now Windows 10 is considering that file to be in use / protected from having changes made to it.
Infact, I can't manually rename the file in Windows either, until I shut bridge down to releasse it from that protection, allowing for changes to be made to the file.
It's a real annoyance as I'm doing batch renames of about 100 folders right now, and Bridge's function is not working properly.