When I use the send-to-kindle feature it send the file to my kindle (ePub format) without issue. However, when I open the file the first time it always places the book at the beginning of the last chapter.
It isn't the end of the world, as I can always just flip back to the first page. But, when I try using the sync to furthest page function between devices it still sees that location near the end of the book as the furthest location.
I have tested this with multiple stories, including those I have read before and those I have never read or downloaded in the past.