Silverfist hung up on ground feature

While kiting Silverfist round the ground feature by the local checkpoint (my witch talks a great game, but she knows when to hoof it) I managed to get him stalled at the north west (up and left) corner of the feature for perhaps 20 seconds. Likely just a pathing algorithm issue, and while his indecision was helpful for me, I'm not certain it's "working as intended".