[GAMEPLAY] Glitch with Xin Zhao

Just played a game where a player purposely exploited some sort of bug. I dont even know what would happen exactly but ill try to be as clear as possible. He would walk out of sight (not into bush) and then use his dash towards me. The thing is I did not see him dash to me untill maybe 2 seconds after I am taking damage for no reason. He purposely exploited it 4 times and was sarcastically acting as if he did not know what he was doing. (Pretty obvious sarcasm). Not just a noob, I know this was a glitch.