Franz, wouldn't remove specified detail from post

On this event ID 1153059, I asked Franz who an NPC was. He told me that the NPC was an undercover agent. He shouldn't have done so, because I hadn't figured it out yet. I only knew surface details about that person. I clicked the rewrite button many times and asked him to rewrite the post that I had no way of knowing that detail, but he wouldn't. He just kept putting it in. Yet, if I replied and asked the same thing in a subsequent post to Franz, he was very amenable and fixed it.