Look at the revision history of this here question — what concerns me is the entry that says:
Post Made Community Wiki by being edited by more than 5 different editors
If you look at the revisions, you'll see that this isn't actually true. It was edited by just 2 people, and then a bunch of stuff happened, and then suddenly bam, Community Wiki.
It looks like some events related to bounties are being counted as edits by the "should this be CW" check. Is this working as designed?