Player should not be moved to where he click to move if hes character cannot perform same movement normal way. Its 200% exploit that create "the Desync", teleporting mid skills, teleporting while knockdown, attacknig from other side of universe, not taking damage because your character already on other side of map  its all caused by mouse movement desync. If you don't want to fix it, just disable mouse movement during combat.

I agree, certain characters like lahn awakening can make mouse movement be way too hard to deal with being able to mouse move a skill that would normally go straight and very slightly move to to left or right, to instead make it turn 180degree and the worse part is that when players do this they dont change direction like that on the other player's screen. They just teleport into the place they are after they do the move on their side after 1-3seconds normally. Completely exploit of something that has been overlooked for years. Not all moves can be mouse moved however and I would really like to know why that is. Like if you can just decide to make some not being able to be mouse moved and others to be able to, why would you make ones that can be mouse moved instead of make them able to be moved with the camera movement (that normally doesnt cause big desync issues).