I've discovered two bugs, they are not critical but I'd like to see them fixed someday.
The first is map autodownload. Recently I was watching a replay, and then just a few minutes later I joined a game on the same map. For some reason it said that I don't have the map and asked for downloading, but I watched the replay on that map a few mins ago. Dunno what's the problem here.
The second, when you join a game and close your faf client, you will be unable to run it until you leave the game, because it will stuck on "setting up Replay Manager". And I guess it has something to do with that bottleneck/local livereplay server problem we had some time ago, which makes a player to be behind in data.