[sirmaru]

I notice that, as of yesterday, I stopped receiving the message "synced to furthest page read on all devices" when I triggered a sync manually. Today I notice my bookmarks and furthest page read were not in sync.

I called it in to Amazon Kindle Customer Service. They said I'm the only one calling in about that so far.

Later, I uninstalled one of my eBooks and then re-installed it. Now all the books sync correctly with the proper message.