There is something weird with the monster’s teleport skill. It breaks how the information on a monster’s nameplate is being updated. Hp bar and dot’s/debuff’s timers stop working after a monster teleports. The HP bar doesn’t react to the damage a player deals. The timer becomes simply an icon with not timer. In addition, after the teleport, a monster stands still for a while, which gives a player a decent amount of time to increase the distance. So it feels like teleport doesn’t do that much for a monster.