OK, I have some news here!
It appears that it comes from the PCGWorldActor of my scene, witch I dont really know what is it. When I hit simulate, I can select those trees and I figure that the PCGWorldActor spawn the PCGDemo_MountainTrees graph, I dont know why, I’ve never setup any of this…
Here is some screenshots that shows what happen.
I tried to delete the PCGWorldActor from Tool/PCG Framework/Delete PCGWorldActor, but it delete it for 2sec and then it reappaer in the outliner.
Still no clue.
