Click image for larger version  Name:	 Views:	1 Size:	375.9 KB ID:	1484442Hello guys, I'm currently working on an airport with curved terrain.
So I made this runway edge light mesh, and import it into UE4
I use a height map to create the terrain so the airport isn't completely flat. So when I alt+drag, I can duplicate the edge lights in a line. And since the terrain is not flat, some of them sinks into the ground.

Problem: But when I lift it and press "End" key. It does not snap to the surface.(The surface has a decal on it)

I've checked the player collision and visible collision, and find my landscape is not in cyan color...Does it mean some stuff is broken?


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More info: I tried to drag in a sphere, and enable physics simulation, and find this..
First I don't know why it is given a horizontal initial speed.
After that, before it hit the landscape....It disappears.
I think it did go through the landscape and falls into the world.