hi! if the room renders above the other it means they are in the same stack. a new room is added to the stack when you place things on top of each other in the 3d view. i guess you could end up in the situation you describe if instead of using plus button in 3d or 2d room panel you built some stuff in the 3d view which added a new room to the stack and then you started modifying that room in the default bitsy 2d panel, is that so? you can also check gamedata panel and look for "stack":, then look for ids of the rooms you see rendered together.
huh i see. it doesn't work the same way for me, when i create new rooms in 2d panel they are placed in a separate stack..
well i guess you could create another stack with a couple of placeholer rooms with a few blocks, and then inspect game data and replace the room ids with the rooms ids you want to be separate from your other stack. bitsy 3d game data is in json format and punctuation is important, make sure you have all the quotes and commas in the same way like you see in the original game data, like not having a comma after the last item in a list and stuff