I think this is a regression bug.

For one game in particular in which I am not a member of most of the groups, I'm frequently seeing the new-message red number in the home screen, but no visible new posts when I open the game. This seems to be new behavior with update 67.

Game 49409, if that helps.

As this discussion is already going on here, just keeping things in one place. :-)

link to a message in another game