My 2 level combining after click play button

I don’t know this is a bug or not. It was okay this morning.
In the editor everything looks cool. But when i click Play other level appears in my editor… I have no idea what is going on. I don;t have anything in my levelblue print. Its seems like everythings ok :frowning: But when i click play button. Everything goes bad.

OOOOOOOOOOOOOOOOOOOOOOOOOOOH in world settings that WORLD COMPOSITION button was checked. How DUMB am i lol