I recently setup some new computers (running Win8.1) for the staff here. These machines use folder redirection (as we always have) with Offline Files sync. I have not traditionally used Offline Files but I've turned it on to give a bit of extra resiliency and performance while working with their files.
Today it was brought to my attention by someone that they cannot rename a file if they change the letter case only. When they do this they are shown a popup that says they need to get permission from their selves to perform the action. Their choices are Try Again and Cancel.
For example, the following will fail:
filename.txt --> FILENAME.txt
But the following will succeed:
filename.txt --> xFILENAME.txt --> FILENAME.txt
My files are being redirected to the same fileshare* by the same group policy but I am not using Offline Files and I do not experience this problem.
I've checked with another user that is setup like the original and they also experience this problem.
If this is a known bug my I have not been able to find an answer.
* The fileshare is running on Windows Server 2012 with deduplication enabled on the volume.