I was Predator and I leaped on an enemy near the rune spawn just as he went invisible from rune. The leap caused me to hit the large cliff and then I was stuck in place.
The only way I was able to get out was to have a teammate pull neutrals close enough to leap on them. I could not move in game.
Dunno if this is a know bug but today i played a game as hag at grimms crossing and used blink to teleport onto the cliff thingys at the middle of the map at north outpost and well, i got stuck. Couldn't move, wasn't autopathed dwon or anything.