Top Down Template. Pawn stops 20 feet short?

In the top down template, the guy runs to the cross hair unless its on a box. then he just stands there. how do you make him run to the cross hair no matter what its resting on. Its hard to pinpoint why he comes to a complete stop 20 feet from the box in question instead of running up to it and then stopping because its solid. Any help will be very appreciated!

trying to figure this one out. I guess they call it click to no where.

This has to do with navmesh and the trace under cursor. The pawn stops because there is no navmesh on the sides of the cubes. Basically the pawn wont try to move where it can not move.