A patch for the create entity menu for GitHub's beta navigation.

nav-create-menu-patch.injector.js

var btn = document.getElementById("global-create-menu-button");
var el = document.getElementById("global-create-menu-overlay");

function toggle() {
  el.style.visibility = el.style.visibility === 'hidden' ? 'visible' : 'hidden';
  console.log("toggle", el.style.visibility);
}

btn.addEventListener("click", (event) => {
  event.preventDefault();
  console.log("click");
  toggle();
});

function domReady(fn) {
  document.addEventListener("DOMContentLoaded", fn);
  if (document.readyState === "interactive" || document.readyState === "complete" ) {
    fn();
  }
}

domReady(() => toggle());