Does this happen with any other books?
Can you open the ebook with the calibre E-Book Viewer, and check what the reported cover/title is? This will help determine if the ebook file itself is being replaced.
It seems Amazon will now "helpfully" update the cover thumbnail used in Cover View, see:
https://www.mobileread.com/forums/sho...d.php?t=262285
(You can get around that by copying the calibre-generated covers, letting the Kindle do its stupid thing, then copying back
your covers).
I don't think I've seen the title being munged though.
...
An easy way to fix the whole mess would be to modify the ASIN in each book to not match Amazon's servers.