According to Shog9♦, a post that gets edited in the close review queue and gets another vote should be reintroduced to the review queue. Apparently this doesn't happen when:
- the person that edited the question (by mistake or misjudgment) casts their vote.
- someone else casts their vote when the question still has close votes active.
I can't verify with certainty due to the nature of the bug (I need at least 3 users with close votes and a couple of hours to test) but that's what my observations have gathered.