Terrain grass does not show up on runtime

I am trying to add grass by paint details on terrain. But grass does not show up on runtime. Tryed detail density and distance max but doesn’t help.
I did try same grass texture on a new test project, everything works fine. Same terrain settings, same texture import settings.

I found the problem finally. I will leave question and answer if someone needs in the future.

I use orthographic camera and i put the camera far far away. Max distance for paint details in Unity is 250 but my camera position.y was 200, and when calculated 30 degrees look down angle it will be much more than 250.

I made the camera closer and grass came back.