I am on Jevelin 4.6.7 and WP 5.4.1. I have a page with the blog template set as static homepage. When a new post is added, in the homepage the post author is always shown with the name of the blog admin, even though the post was created by someone else.
All post authors are ok but the latest, In the single post view the author is ok, and if I switch to the index.php page as starting page the author is ok.
The problem is just with the latest post in the page set with the blog template, if I add another post, the previous, that was wrong before, gets the right author!