I occasionally use the bot, only with a personal mage deck and i've found these bugs:
1 in the turn MIND CONTROL TECH is played, opponent's minion controlled is still considered an enemy (so often becames targeted by my removal spells or my hero power).
2 HERO POWER is very often used in an explicable mode (against the wrong enemy character).
3 the bot very often is incapable to restart the game , it only minimaze and re-open battle.net window (i've already followed the auto reconnect tuto).

i hope it helps.