get_post_status filter is ignored in some cases

[zaycakitayca]

Code:

<?php
add_filter( 'get_post_status', function( $post_status, $post ) {
        return 'private';
}, 10, 2 );

What does not work:
For unauthourized user posts still displayed in categories, "Recent posts", "Recent comments" and maybe somewhere else.

[SirLouen]

You have to edit the theme you are using or create your own theme to avoid this. By default not all themes check for this in certain templates.