Weird behaviour Landscape material

Hi, after some years I decided to pick up the Unreal Tools again. So I ran into an issue.

No I have this landscape material with these assets like grass,rocks and ferns attached to it.
It went well but now on one area they gone way up in the sky like a spike. Its seems like an
invisible collision issue. Does anyone have experience with this issue or know how to solve this ?

Treid to smoothen the landscape and paint another layer there but the pike won’t go.

Thanks in advance.

Just guessing but are you using a grass type? If so check that align to surface is checked. More here. If this is how its coming together bear in mind your trees and rocks will have no collision…

I will check that thanks

I used it as grasstype and align to surface is checked. So this is how I have it. It works wel on all the landscape except for this area.

So,there is noone who ever seen this behaviour?