id summary reporter owner description type status priority milestone component version severity resolution keywords cc focuses 45200 """isn't compatible with the block editor"" added to non-editor metaboxes." jsmoriss When metaboxes are added to plugin settings pages, WP 5.0 adds an error message that the metabox is not compatible with the block editor - even though this is NOT a block editor page. Setting {{{ __block_editor_compatible_meta_box }}} to true in the add_meta_box() callback args does not help. An example screenshot from a plugin settings page (/wp-admin/admin.php?page=wpsso-essential) is attached. defect (bug) closed normal Editor 5.0 normal duplicate