Fixed link: https://imgur.com/a/SZWgykq
I don’t see any mob at all. Not necessary behing a wall.
Perhaps it is this:
Sometimes, mob can be killed before they visualize (and not counted). 
Fixed link: https://imgur.com/a/SZWgykq
I don’t see any mob at all. Not necessary behing a wall.
Perhaps it is this:
Sometimes, mob can be killed before they visualize (and not counted).