I've just been doing some reviews in the "Reopen Votes" queue and, during this process, I noticed a change to a new pop-up when I select "Reopen". The new pop-up has a much nicer look:
However, after clicking the "Vote to reopen" button, the dialog doesn't close! The next post in the queue comes along, but the dialog(ue) box stays active. (If I change my mind and click "Cancel," then it closes properly.)
I'm assuming this is a bug, not a feature!