After installing the latest software update (5.15.1), when sending an EPUB or MOBI file to the Kindle device via email, the result is that the author is shown within the title field. In other words, both title and author's name are joint together in one filed. On the field destined to display the name of the author it only says "Unknown".
On the Cloud (Amazon Manage Your Device Content) the name of the author also appears as "unknown".
The only way to show the metadata correctly is by side loading the book (using a cable). The obvious problem with this process though, is that the book would not be synchronised.
Is there any trick to force the Kindle to display the metadata correctly?
-- TECH SPECIFICATIONS--
Kindle Paperwhite (11th Generation)
Version 5.15.1 – September 2022