Sprite collision broken on parts of sprite

Using an outside editor to make tilemaps and export as images. Then using these images as sprites for my worldmap. Makes for easy level making.

Anyways, it works great, except for whatever reason a part of my sprite has absolutely no collision, but the collision editor shows it should.


It shows that the far right cliff portion should have collision.

But when I play, my character falls through the far right cliff portion. The screenshot below shows the areas without collision, using a navmesh.


Any ideas why this sprite would have touchy collision?