You thought this NPC would fall behind when the city he was supposed to protect was far enough away. However, the guard stubbornly continues to follow you, even though you have not committed any crimes.

"We're under attack!" He rushed into battle before the alarming music started playing and you and your companion had time to react.

The monster was cut with just one swing of the sword, but you will not gain experience, because this NPC is not on your team, no matter how much he wants it. At least you're safe. "Everything is fine, I hope?"

This was the guard’s standard line, but for some reason he said it differently. The NPC has sheathed his sword and is not taking his eyes off you, as if you are a sweet roll that needs to be protected from a thief. Even saving does not help get rid of this bugged guard. Even if not right away, he leaves his post every time to find you.