I just wrote a reply to "Re^2: how to improve: use MODULE VERSION LIST" (id://1179142). I previewed twice then created. All looked good and perfectly normal up to this point.
When the "created" page appeared, I followed the link to the start of the thread: "how to improve: use MODULE VERSION LIST" (id://1179107). This appeared but, when I scrolled down, my post was nowhere to be seen.
I went to Newest Nodes and a post by me was at the top of the Notes list. I followed that link "Reaped: Re^3: how to improve: use MODULE VERSION LIST (id://1179154) but found an orphaned page (i.e. no "in reply to" or "in thread" links at the top). The page also had no content. It did have what appeared to be the correct title ("Re^3: how to improve: use MODULE VERSION LIST"): small consolation.
I went back to the tab where I'd created my response. I hit the back button and the content of my response was there BUT it said "by 1nickt" followed by "on Jan 08, 2017 at 09:00 AEDT ( #1179146=note: print w/replies, xml )". Note, that ID (1179146) is different from the one in Newest Nodes (1179154).
I followed that link: it was an earlier reply by 1nickt to a different node in the same thread.
Hitting the back button again (on the tab where I'd created my response) took me back to my final edit prior to posting. I've saved the content: I can post it again when the problem's fixed.
— Ken