Resolve button that only appears on hover causes accidental clicks
It has happened before that I was just trying to click on a comment to jump to its associated page and accidentally hit the Resolve button because it only appears on hover. That area is prime clicking space because it appears empty. To subtly slip in a button right before you click down seems pretty dangerous. Especially for an action that does not have any easy to find way to undo itself.
Oh yes please, I have accidentally done it two times too many by now :/