Bard's E in Dragon Pit
This has happened to me twice so far, out of about 15 games with the Bard...
I would try to E from the North side of the Southern outcropping on the Dragon Pit down to the tri-bush area and would get stuck in an area that I would naturally assume is not meant to be occupied by players (or creatures). It seems there is a hollow area between the stone and the trees on the bottom right of the pit. I am not sure if you can walk out of this area eventually, but the auto-pathing just made me jitter around in that one spot for a second or two, where I was quickly killed by the enemies I was attempting to flee from.