Act 2 - The Dreadnought : monk spells get blocked on wall and void either visible or invisible

Hi,

Monk lightning spells like fallind thunder are not working properly, making it very frustrating, the spells are just blocked by walls/void which are everywhere on this map, it makes it really not fun that it's impossible to kill long ranged enemies that are free to attack through these walls/void with spells & arrows

Either they should not be able to or the monk's spell should be able to