Remove title as a query var so we can use it in our forms

remove_title_query_var.php

/*
	Remove title as a query var so we can use it in our forms
	
	Since WP 4.4, using a title parameter in a URL will invoke a post query by title.
	We want to disable that so we can use title as a parameter in our forms/etc.
	
	Add this code to your active theme's functions.php or a custom plugin.
*/
function remove_title_query_var( $qvars ) {
	$qvars = array_unique($qvars);

	if(($key = array_search('title', $qvars)) !== false) {
		unset($qvars[$key]);
	}
  return $qvars;
}
add_filter( 'query_vars', 'remove_title_query_var' , 10, 1 );