mturk-fix-submit-button-outside-form.user.js

// ==UserScript==
// @name         Mturk - Fix Submit Button Outside of Form
// @namespace    salembeats
// @version      1
// @description  .
// @author       Cuyler Stuwe (salembeats)
// @include      *
// @grant        none
// ==/UserScript==

if(window === window.top) {return;}
if(!document.referrer.match(/worker.mturk.com\/projects\/[^/]*\/tasks/)) {return;}

if(!document.querySelector("#mturk_form input[type='submit']")) {
    document.querySelector("#mturk_form").appendChild(document.querySelector("input[type='submit']"));
}