There are enemy NPC guards that spawn into the courtyard in Hills. They attack the friendlies and cause the crossed-sword “in combat” icon to appear on the map. The biggest thing, though, is that they cause the way point to show as contested and it cannot be used.
It costs 1.5g to order a way point in the keep. This is a substantial cost to the player for something that a bug is negating. It also makes the crossed swords at the keep become a “cry wolf” problem. No one pays attention when the keep is actually under attack because it shows combat when none really exist. If there is a lone defender in the Keep they are oftentimes left with killing these bugged “guards” to keep the WP effective instead of watching for enemy invaders as they should be.