I didn’t touch anything from the Thudlow_Boink point. The only click was on the Reply under DPRK’s post.
I search on “wrong poster” and found some examples that could be the same effect. I’m sure I’ve seen others, toos.
Of course I considered an edit. But I thought that edited posts show a pencil afterward. What causes a post to show a pencil if an edit doesn’t do so?