Hecarim charge into wall
It has only happened with bramble but if you E him and send him straight back you go through him and get stuck in the wall behind him.
The first time it happened i was able to just kill it no problem since it was late in the game.
But it happened this time when i was oom and like level 3 so i couldnt keep my hp up with auto/walk/auto so i died lol in the wall sad and alone. If you kill him i think you can get out (not sure though) but until then you can not move, you arent just being creep blocked, you are literally inside the wall.
Probably already a known bug but yeah. ^^