I was able to review the same post twice, in two review queues
123464
If you're quick, you can earn two review 'points' for one review
66262
Nothing happens when I press "Submit" on duplicate suggestion
82910
Low Quality Posts reviews add comments more than once on behalf of reviewer
10299
Circular duplicates in the close review queue?
158625
Can the same answer from the same question be bountied multiple times by the same user (non-concurrently)?
26073
Annoying comment bug in review queue
3685
Confirming that my own question is a duplicate by voting to close should have immediate effect
146225
Duplicate questions on other SE sites?
9026
"Possible duplicate" notice not removed after reopening question
13347
Flag post that is already in low quality review queue - any effect?
78861
Why are there two separate boxes about duplicate questions?
81081
Can a single user post two answers for one question?
111204
Voting and flagging comments gets enabled when loading additional comments in duplicate question
69602
Why does Super User site appear twice in vote-to-close dialog?
94641
Reviewing suggested edit of own post after completing 20 reviews
59636
I can't retag or otherwise edit a question while waiting for an edit I reviewed from queue to be approved or rejected
52699
Audits bug in the filtered review queue