1 Tests that event handler is called in correct world.
2 Sending from world 0...
3 In main world: Main World
4 in isoloated world 0: Isolated World 0
5 Sending from world 1...
6 In main world: Main World
7 in isoloated world 0: Isolated World 0
8 Sending from main world...
9 In main world: Main World
10 in isoloated world 0: Isolated World 0