I was concerned about this, but it appears to be a whole lot of nothing. All of the buttons still work within the app, it is just outside that is an issue. On my TS4K+ I just used Button Mapper to to make the DVR button open the Channels app instead of the default action. On my Harmony Companion for CCWGTV I was already doing this, so no change there. Same thing as on another CCWGTV using the default remote where I already used Button Mapper to make the Home key open the Channels App.
The only thing that does not work is outside the app clicking the Guide or any of the colored buttons to do a Channels app action. But like I said, with the DVR/Home/Exit buttons mapped to open the Channels app, once inside they all work as expected. Really a nothing burger.