Normally when reading a resource on my iPad, I can tap near the middle of the screen to bring up a toolbar across the top. It has a back arrow, ToC button for current resource, Favorites pull down menu, share button, etc.
Today I noticed these did not show up as usual. I can access Favorites by using the left sidebar, and the ToC by tapping on the resource name on the top of the screen. But this arrangement is not nearly as useful.
How can I recover the normal iPad toolbar?
Thanks
JZ