epub3 nav error in iBook
I'm working on an EPUB3. I use nav.xhtml as the Table of Contents. Everything works fine in other epub readers. The Table of Contents shows in iBook on iPhone too. But it would not navigate to that place when click it. And I found this happened when the href included "#" as anchor in <a> in nav.xhtml.
It means if the <a> look like this:
<a href="Section0000.xhtml"/>
It works fine in iBook on iPhone but does not work in iBook on iPad.
But if the <a> look like this:
<a href="Section0000.xhtml#nav_1"/>
Then it does not work in iBook on iPhone but works in iBook on iPad.
Could anybody help me?
iPhone 12 Pro Max