I thought the teleport item was to be used to be able to move within a proximity of alliance mates, not as a combat tactic.

Although, I doubt people are going to stock up on teleporters just to be able to poof away. Heck, it could have been a coincidence. He may not even have known you were coming, and planned to teleport anyway.

It sucks, it probably should be fixed if it isn't intended, but I doubt it happens so frequently that it'd be high priority.