If you build units on the border, closest to the point the creepwave spawns, your units will sometimes teleport to the king area before the fight is over.
This usually happens on ranged waves, since the unit that spawned really back is behind the point that triggers the teleportation, but it also happens on other waves if your units try to surround the creep wave.

There are 2 possible fixes for this problem:
- Do not allow me to build that close to the creepwave anymore
- Move the teleport trigger closer to the end of the lane

The easiest way to reproduce this is on wave 4 (snipers). Build 4 tidehunters on the line, as close to the creep area as possible. at least one will teleport to the king area before the fight is over.