[quote="newt":2l59c07o]just tried it with 3d enabled, but now the shadow is passing threw the hills.[/quote:2l59c07o]
If you don't want something to be obscured by 3D objects, put it on another layering with '3D layering' off.
[quote:2l59c07o]Is there a way to disable z depth sizing, and still keep z height?[/quote:2l59c07o]
No, the runtime is using a real 3D engine with perspective, and since something closer to you is bigger, that's what happens. Besides, I don't think it makes much sense to have 3D if it doesn't do that... isometric isn't real 3D, so you'd use other layering methods for that.