hide_empty property not working when using get_terms

Question

I want to display all categories including the ones with no posts assigned to it.

So I found out about the 'hide_empty' property. Here is my code:

<?php 
    $args = array(
        'taxonomy' => 'category',
        'hide_empty' => false
    );
    foreach( get_terms( $args ) as $category ) {
        echo '<p>' . $category->name . '</p>';
    }
 ?>

But still only the non-empty categories are shown. What am I missing? My WP version is 4.8.

Thanks for help!

Answer 1

Thanks to Laxmana's comment above I found the solution. The plugin User Access Manager has a setting in its options to hide empty categories. It is enabled by default. I disabled the option and now all categories are shown.

Thank you for your help, especially thanks to Laxmana!