[bug] Display Posts Date View - Default priority can cause filter to be overwritten

[joaoccruz]

add_filter( 'display_posts_shortcode_output', array( $this, 'post_output' ), 10, 11 );

has to become

add_filter( 'display_posts_shortcode_output', array( $this, 'post_output' ), 11, 11 );