After updating to Meta-Box version version 5.5.0, I am getting the following warning on a post field displayed using a select-advanced field-type with values populated with a query_args filter -- (is this why no one talks to me at cocktail parties?)
Warning: Parameter 2 to RWMB_Post_Field::search_by_title() expected to be a reference, value given in .../wp-includes/class-wp-hook.php on line 303
The field array used to generate the meta-box is as follows:
array ( 'id' => $prefix . 'venue', 'type' => 'post', 'name' => 'Venues', 'class' => 'venue_live', 'std' => '', 'required' => 1, 'post_type' => 'venue', 'field_type' => 'select_advanced', 'query_args' => array( 'author' => SELF::get_current_user_id(), ), 'multiple' => true, 'placeholder' => 'Select Venue(s)' ),
The problem persists when the filed array is reduced to:
array ( 'id' => $prefix . 'venue', 'type' => 'post', 'post_type' => 'page', 'name' => 'Venues', ),
I will now dig into the WP search_by_title function and back trace the issue, but though I would post here to see if this is a known issue.