several times teleports fail due to character movement. this is coused by the game calculates if there is valid path to your destination in the moment you start the teleport ability and once more when it’s executed. the problem with this is that if your char moves to an unvalid teritory in that casttime the whole spell + resources are wasted. my suggestion on this is only calculate after you’ve began casting.
vid is only showing the problem, the situation isn’t really lifelike ^^
https://www.youtube.com/watch?v=-YCYn_dEufU