Am I misremembering?
I could've sworn that a few months ago there was a post on Site Stuff by MNHQ saying that we would no longer be able to name change mid-thread. That if we posted a thread or posted on someone else's thread and then tried to name change and post on it again, it would revert back to the original name we used on that thread.
Maybe it was just for on the browser version of MN?
It's just that I keep seeing threads where the OP comes back to the thread under a different username and I didn't think that was possible anymore. It makes it annoying if you're reading the thread via OP-only filter or scanning the thread for the colour-change where the OP has posted.
(I'm using the iOS app.)