We are running VS2013, along with VSTS for source control. We have a checkin policy that enforces a checkin Comment and for the user to assign a Work Item(s) to the checkin. This has been working fine as expected for a while.
Recently, I got one of the developers to test VS2015 Update 1. He is now reporting to me that the checkin policy doesn't seem to work properly; even though he correctly adds a Comment and assigns a Work Item for the checkin, the system doesn't seem to recognise them and it gives a 'policy failure' warning like this:
Is this a known bug with VS2015? Or some sort of compatibility issue upgrading from 2013 to 2105?

