Hey, @Ivan3z , really interesting!
I misunderstood you. I thought you meant if the Nav Mesh’s native/default behavior can do this, which, again, I don’t think it can.
I have no idea what this person did, and they don’t really seem to want to let anyone know!
Maybe you can direct-message this person?
EDIT:
I don’t think this person could have done what they did without doing this. It looks like he “cut a
dynamic hole” instead of creating a dynamic instance. The hole moves, not the mesh. That’s what it appears, anyway. I don’t think the video is possible if the Nav Mesh doesn’t encompass the entire level. What you want is for the Nav Mesh to move, and it’s not actually moving from what I can see.