There’s a glitch which has been affecting the forums for a while now. It’s one where you’ll make a post and it will not show up in the thread(s) but does show up in the forum index as your username having made the most recent post in said thread(s).
Sometimes if you edit your post it disappears as well.
Latest incident: posted in the Comedy thread started by Rikirk69 but the post doesn’t show up. However the forum index shows my username as having the latest post.
Seems to be infrequent and random. Content doesn’t seem to matter, both text and attachments are affected.