Actually we think we have found out what is going on. When you publish a reply the target of that reply (where you land after clicking Save) is the direct link for the post you just published. For Matt's post (the 16th post in this thread and post 1 of page 2) that link is
http://community.theport.com/Features/Discussions/discussion/2010/12/20/defect-posts-not-appearing-after-savingposting?tr=80827.
Copy/paste that link into your browser address bar and imagine you had just hit "save" on that 16th reply. Notice how you load page 1 of the topic instead of the page the actual reply is on. This happens for every post of a new page (each 15 subsequent posts from 16 up). Notice if you scroll to the bottom of the page and click page 2, the post is actually there.
It appears our counter is off by 1 post, so the system thinks the reply you just published is on page 1 when in reality it is on page 2 (or 3 vs. 4, 4 vs. 5, etc.). So while the post IS actually there, the direct link to that post, including the "Latest Reply" hyperlink, doesn't load the appropriate page, so it seems as if it disappeared.
Is this consistent with what you are seeing? If so we have a fix planned for this issue but it will have to wait until after the holiday break.
ADAMateo says:
Looks like that posted okay. Maybe has to do with SSO sites? Or our site's Javascript settings? Just thinking out loud...
ADACarolyn says:
This is reply number 15