Moving dynamic obstacles do not rebuild Nav Mesh

Hi, I have dynamic obstacle in the scene that i am moving during run-time from blueprints\editor. The problem is the
Nav mesh do not rebuild after that and my characters still see the hole in the nav mesh where the obstacle was.
The Obstacle define as follows:
Box Collider with Dynamic Obstacle checked and Area Class set to Nav_Area_Obstacle in Navigation section.
I have RecastNavMesh with run time generation set to Dynamic Modifiers Only and Force Rebuild on Load checked.

Also i already try to rebuild Nav mesh right after i am moving the obstacle using Execute Console Command with “RebuildNavigation”

Any suggestions??