We had a post marked as needing approval:
when this happens it appears the spam system auto deletes it, causing this log entry:
and this moderation history entry:
Unfortunately when the post is marked as not spam there is no entry in the moderation history, just this log entry:
leaving the moderation history in the confusing state of showing the message as having been deleted by system even tho it’s visible to anyone.
TLDR; the moderation history should show when the post was confirmed as not spam (and by who).