I was just notified of an edit to a post I made, and requested to review it.
Having not done this in a long time, it took me awhile to find the review link, but I got past that. The edit looked fine to me, so I was expecting to find an "approve" button.
The display I saw showed 3 other users had approved the edit but it wasn't obvious that the edit had been accepted (at least, not to me). The display offered a "Next" button, but not an "approve" button. In my confusion, I guessed I had to press "Next" (next what?) to get to the "Approve" opportunity, and sure enough, when I did so, I was offered an "Approve" button.
So I did. And then got told I wasn't paying attention, that I had approved a vandalized post (not my post).
Guess in fact, that's what I did, but the interface I think led me astray.
I think the review page should show clearly that the edit was approved and that it isn't possible to approve it more. I can't see that page now, so I don't know if it did say that somewhere. Clearly it wasn't red or blinky enough.
Another possible fix is to change the NEXT button to say "Review a different message edit?"