but isn’t the edit>project settings>maps&modes menu is supposed to change the overall default game mode for engine and the world setting thing is supposed to override it for specific level ? … Why does it work only after we rename stuff … I mean even after I restart the engine the overridden game mode works(after rename of course) … I don’t know if you have misunderstood but i’m trying to override a game mode for custom level and not change default gamemode for the engine. If you didn’t misunderstood m sry 
its jus me n my OCD of being specific and make sure ppl get the exact thing … Anyways … i’ll check that and reply in 15 mins ! its not much of a big bug but its kinda annoying first time and I thought I did something wrong.