Repro steps involve being in a highly active forum where you’re likely to get caught in a race condition or have failed post loads from other posters in the same topic. This forum is hardly active enough to cause it with any regularity, unless you want me to spam this place or try.d hoping I can “win” this race.
I know the insinuation here is that our forums are broken by our own doing. But this bug was reported quite a long ago and has persisted for months.