The moderation system seems to have gone a bit trigger-happy.
When I made a small edit to the thread How does the Service Manager stop processes?, the thread went into moderation limbo. It's not clear to me what could have triggered the problem. I simply removed a duplicated sentence. Now the entire thread has disappeared, including replies. It does not even show up in my list of contributions.
The lack of visibility to the author of the status of his or her posts is a major drawback. The disappearing notification banners are not an adequate substitute.
The moderation system leaves much to be desired.