sett , sylas bug

I found pretty easy bug with sylas and sett ultimates when they ult aech other at the same time one of them will bug and cannot move untill the end of the game because he will stand on sylas/sett from enemy team (you can see it in my game : name - keppa123 , server EUNE , last game with shaco , time 22:00 to the end of the game)