A related bug/hack/abuse is that

one reviewer can repeatedly vote to Leave Closed or Leave Open ( = vote to remove from queue) on the same question.

It looks like this ability exists whether or not there were edits on the question during the time between the first and the last Leave Same vote, so the multi-votes can be on exactly the same version of the same question.

This poses the same inequality problem as Delete voting on a question one has successfully voted to Close: it creates a race condition where users who are over-involved or always online, have a way to cancel the voting abilities of others by acting quickly enough.

A related bug/hack/abuse is that

one reviewer can repeatedly vote to Leave Closed or Leave Open ( = vote to remove from queue) on the same question.

It looks like this ability exists whether or not there were edits on the question during the time between the first and the last Leave Same vote, so the multi-votes can be on exactly the same version of the same question.

This poses the same inequality problem as Delete voting on a question one has successfully voted to Close: it creates a race condition where users who are over-involved or always online, have a way to cancel the voting abilities of others by acting quickly enough.