When you hover over a link in a reading list, the resulting popup ignores the offset in the link, instead displaying the text at the beginning of that page. However, when you click on the list, you do get taken to the right place (NOT the beginning of the page).
The screenshot below shows the hover text. The link itself points to the heading in the resource shown (click it and it takes you to the heading), but the hover text shows the text from the beginning of the page.
