Grass Tool isn’t culling the meshes properly. Meshes happen to appear/disappear in quads instead of appearing/disappearing individually. This bug might be specific to some specific landscape sizes only i.e in my case 1009x1009.
Repro steps:
Create a landscape with the given settings as in the image.
That is not an issue. The grass is expected to cull in clusters like this. To get a gradual circular fade, you would need to use PerInstanceFade material expression in your grass material.
That’s wrong, the circular culling is ok in editor, without any “PerInstanceFade” node, but not in standalone, spawing everywhere on close landscape components instead of distance to camera, so there’s obviously something wrong between editor and standalone.