King of the Mists 150 bugged out

Bug Report ID: #1586713942

Was doing king of the mists when when boss bugged out on the ramp. Had just phased him and I guess I had phased him at the same time he was doing his teleport away and he teleported onto the ramp near his alters. After doing the wisp run, I came back to the arena and he was bugged on the ramp not proceeding to phase 2.