Q: IBooks will not sync notes, bookmarks, highlights, etc with cloud iOS 9.3

The same here! The iBooks are one of the  important apps but the bookmark doesn't react on my iPod touch 6g  at all!

I am having the same issue, VERY frustrating!!!!

Same issue, and after several calls to support,I was told they'd get back to me. Must be an internal glitch with the new iOS.  I'll post my fix when I hear back from Apple. Frustrating to say the least. Rick

Same issue as well. I dont understand why they cant just add a "sync bookmarks" button inside of ibooks or allow you to pull down the bookmarks to refresh any new ones added. Its frustrating to attempt to read a book across multiple devices when everytime you go between your iPad and iPhone you have to spend 10 mins finding where you were up to. i might read 100 pages in a night. then trying to find that exact spot on my phone the next day is far too time consuming.

I even have books and pdfs synced through icloud drive. So why arent the bookmarks treated the same?

Please just add a button that allows us to quickly update our bookmarks. the current feature is broken for a lot of people.

Its not just this ios, its been a problem for a while. Ive spent hours attempting anything i could possibly think of to get it to work with no result.

I was notified yesterday by a senior support rep that Apple fixed this issue. Requires a restart on all devices. Works great for me now!

And now?

First it worked again

AND a few days later it stopped working again.

Did hard restarts on devices.

Now what?