Three possible bugs I have noticed (though it could also be because I switched my OS recently).

Sometimes after I close the game, the process for it will still be running, and my FPS drops from 58-60 to about 3 unless I go in and end the process manually.

Also, when I open a replay from the forums TB crashes. From what I can tell it seems it doesn't like to read any replays from older versions. I'm guessing it is the cache feature that causes it since it wasn't on older versions and affects the way the physichs is handled, but then again Im not sure because even replays from the last beta cause it.

Lastly sometimes my replays either dont save, or only save in the replay folder and do not show up in game in the replays list. So I can save them, but to open them I have to navigate to the folder and click the replay.

Im on windows 7, but like I said I just switched, so I might be overlooking something on my machine.