This is most easily seen with sneak gyros, but when a NPC, such as a doorbreaker, is stealthed, it’s position when it becomes visible again is in the wrong spot. Sometimes it’s off by a huge distance, until that NPC performs an attack.
Was just in a Stronghold game. Engi had a sneak gyro about halfway before the outer gate (which was down). We killed the sneak gyro, but the doorbreakers did not reappear until they got all the way to our inner gate.
Intentionally or not, this is being heavily exploited in Stronghold currently.