V2.2.3 Calls add_submenu_page() improperly, barfs errors

After upgrading to v2.2.3 in a development environment with errors enabled, I get this at the top of every admin page:

add_submenu_page was called incorrectly. The seventh parameter passed to add_submenu_page() should be an integer representing menu position. Please see Debugging in WordPress for more information. (This message was added in version 5.3.0.)

This can be fixed by going to plugins/polldaddy/polldaddy.php and changing line #190 from:

$hook = add_submenu_page( $slug, $menu_title, $menu_title, $capability, $menu_slug, $function, ‘div’ );

to

$hook = add_submenu_page( $slug, $menu_title, $menu_title, $capability, $menu_slug, $function, 99);

…which, I hope, you’ll do as quickly as possible in the next release!