Last man (event) Not really working

[Mr.Scare]

What is the bug: Basically if everyone goes into a corner like 3+ people none of the mobs (Mr Bones) can't hit you,

Where is this bug located: Event Last Man

How can we recreate it: Host a Last man event with lots of player

https://imgur.com/a/MY8Ay

https://imgur.com/a/vuXD4