JArvan ults wents invisible and blocks entire Lane

Jarvan ult leads 2 a bug which blocks area, in my case mid lane, and wont disapaer. i was able 2 attack it as well as minions could but was invulnerable which lead 2 a massive stack of minions which never went there way down the lane

sadly i dont really know how the bug appeard but at the start of the video u can see (even if its just short) that Jarvans ultimate already looks kinda strange so far i gladly saw it only once.