Changing walking direction while telepoofing from island to island can cause you to drown

If you start walking (or change the walking direction) while telepoofing, the telepoof may be canceled. If you do this at the edge of the map while walking towards the edge of the map, your location after canceling the telepoof is over the water, presumably by the amount you would have walked between casting and canceling the telepoof. If that location is far enough over the water, you will drown.