Tried this out and noticed that it maintains scroll position between pageloads (scroll halfway down a page, click a link, new page loads halfway scrolled down). Figured it was a bug, but then saw this item in the readme's To Do section: "Remember scroll position when using back button".

Is it a widely accepted convention to maintain scroll position between PJAX page loads? When a large portion of the page content is changing, one might expect the page to scroll back to the top.