Hi Tom! I can´t make it work.
I have a new installation with Admin and 2 authors Pepe (id = 2) and Paula (id = 3).
Pepe has posts: noticia pepe1, noticia pepe2 & noticia pepe3 and Paula: noticia paula1, noticia paula2 & noticia paula3.
The show post list I have for Pepe:


And list for Paula:


The PAGE of the news of Pepe with its shortcode shows me all the news: of Pepe, Paula and admin (not only Pepe):

And Paula’s Page the same (not only Paula):

Something must be wrong, can you help me?