Incorrect focus management upon using book navigation

[rhoadsstevens]

Priority level 1 (out of 3) from UW Accessible Technologies

WCAG mapping: 2.4.3 Focus Order

STEPS TO REPRODUCE:

1. Go to this book: https://edge.manifoldapp.org/read/the-wind-in-the-willows/section/6419acef-68c9-41d1-bfdf-ab6911d6f670
2. Navigate to the "Next Chapter" link in the page. (You may have to go through a few chapters to see this issue)
3. Note how the focus is at the bottom of the page rather than the top.

OBSERVED BEHAVIOR:
When users are navigating through books, there are many instances where the focus starts at the bottom of the page rather than the top. After tabbing one time, the focus indicator focuses on the bottom element for Next Page, skipping all elements at the top banner. This also happens when users are opening the book for the first time.

EXPECTED BEHAVIOR:
When navigating between pages/chapters in a book, the focus should land at the top of the new page rather than the bottom. When opening the book for the first time, the focus should go to the "Menu" element as it is the first focusable element in the page and will allow users to explore the elements in the banner.