Shadow doesn't update for a moving nanite mesh (fixed in 5.4)

When a nanite mesh moves, the shadow does not.

1. Download licensee test project with level from here (also attached) - [Link Removed]
2. Enter game mode.

(See the linked UDN and attached project/level for additional details)

Expected:
The shadow of the cube in the middle of the screen updates as the mesh moves.

Actual:
The shadow does not move but stays in the same place.