Wierd bug when spamming bat doodad...

The picture shows the wierd bug, I placed about 700 bats and it happened. It also shows the wall doodads flying in the air. It may show the wall doodad since I placed multiple wall doodads near there, and I think the other thing is the bloodmage.

You don't need 700 bats, take the number down.

its a common bug. wc3 cant make that many models appear without killing itself so it hides unit models.