When you open the review queue, the note input field of the last reviewable is automatically focused. This is a little annoying on touch devices that automatically open the keyboard as soon as you open the review queue. So, while I want to get an overview, the keyboard already covers half of my screen.
The autofocus also leads to scrolling to the field, which is generally helpful, but since the last field is auto-focused you kind of start at the bottom of the review queue.
The reason why I think this is a bug and not just UX that should be improved is that when I changed the filter from “pending” to “everything” I was trapped in an endless loop of “autofocus the last reviewable” and “load more because the user scrolled to the bottom”.