When i was playing Supermechs, a noticed a few "bugs", when fighting with someone, my turn got skipped. This happened a few times in different fights.
When the timer started, it immidiately went back to 0 and skipped my turn.
Other bug was that sometimes when you have one action point, you still get to attack twice.

So....yeah.

Also, a guy with 0 wins and 0 deaths was at no.1 position in ranks. lol.
Only for a little while though. I had these few bugs before, though now i dont have them during the game. Just reporting them.

The 'losing time on your turn' bug seems to happen to quite a few people.
Personally, I think it's lag, and others dissagree, but noone seems to have a diffinitive answer.

For now, I suggest turning all the in-game options to their lowest settings, and see if that helps.
Other programs running at the same time may also slow the game down, so close any other programs if you can.
Also make sure you're playing the latest version (should say ver 2.5B in the bottom left of the loading screen).

I think the one-action-point-attacking-twice bug is known, and only happens on the first round with certain actions (I think if you use the shield, but I'm not sure).

The ranking list is full of bugs, but they're a non-priority for the developers, so just ignore them for now.