Results page displays all authors’ posts if user name has capital letter

Using Frontier Query with Frontier post.
On Results page I am getting the required list of authors who have submitted posts in one category.
However when I click on some of the authors in that list the page returns a list of ALL authors’ posts, not just the ones of the author that was selcted.
After doing some investigating and testing with new users, it seems that the only author links that work correctly are those that do NOT have any CAPITAL letters in the username.
Those that have only lowercase letters return a list of only their own posts. Which is the correct result.

Shortcode I am using is:
[fq-infobox filter_object="category" filter_values="opere" group_by_object="authors" post_type="post" order_by="date" show_empty="true" title="" month_format="m-Y" date_format="d-m-Y" style="no-border" item-styling="table" item-columns="3"]

Thanks

• This topic was modified 6 years, 3 months ago by agrsorgente.