Weird errors teleporting non-player entities from one world to another

I'm trying to make a new Inception plugin but right now it's only able to teleport non-players. If I try to teleport other entities (for example from the lower end of "world" to the upper end of "world_nether") it loops the message that it's teleporting it:

Also I can see the entity falling from the sky in "world" again and again.
Here's the task itself: http://pastebin.com/7uw557va

BTW: The task get's executed every 10 ticks (0.5 seconds).

 

hmm do you force the chunk to load before you do that?

 

You mean like this:

Code:java

		  loc.setWorld(to);
		  loc.setY(to.getMaxHeight() - 1);
		  Chunk tc = loc.getChunk();
		  if(!tc.isLoaded())
			tc.load();
		  e.teleport(loc);

? Yes, I tried it, but it didn't make any difference.

 

hmm don't know than

 

I just extended the debugging lines to this:

Code:java

		  System.out.print("Teleporting "+e.getClass().getName()+" from "+world+" down to "+to.getName());
		  System.out.print("New world: "+e.getWorld().getName());

and made a little video showing what's going on:

As you can see it confirms that the entity was teleported to the nether (again and again...) but it seems like it's really teleported to the world. Could this be a bug in bukkit?