4K Best Available

I have a couple of 4K XG1v4 DVRs set to Best Available video output resolution.   When going to a channel with a 4K program, the set should display a message saying a 4K version is available.  I have not seen that message on any of the 4K Fox and FS1 baseball playoff games.  I have to press Info to find the option to change to the 4K stream.  Has something changed in how 4K Best Available works?