Bugged encounter PoE 2

So i came across this during mapping doing the great beast hunt the second one specifically ive never seen the Scorpion get stuck in the tail of the burrower and turn into 0 hit box and does no damage

https://www.twitch.tv/nexsenium/clip/ElatedEnticingShrewPRChase-eP3bAakYgYlcXaQA