i can't use layer things, and then starfield overrides all map, i tried to use layer folders but them didnt work

Your layer issue is unclear. What do you mean by "didn't work"? Layers are purely for organizational purposes, and don't raise or lower objects in the map. That is what Z-indes is for.

Starfield will preview above all other elements, but it actually renders below them, that is a bug.

oh sorry, i thinked layers are like photoshop ones