Missing Quick Reply Toolbar in IE

Some of our members who use Internet Explorer are reporting that the Quick Reply Toolbar "went missing" when I installed a Javascript Module to hide forum signatures.  This is the Javascript code that I have installed.

Code:

$(function(){

/* --- CONFIGURATION --- */
// Topic IDs where the signatures are hidden
var topic_ids = [1, 2, 3];
// Forum IDs where the signatures are hidden
var forum_ids = [1, 2];
// Category IDs where the signatures are hidden
var cat_ids = [5];
/* --- CONFIGURATION --- */

var topic_match = window.location.pathname.match(/\/t(\d+)/); if (!topic_match) return;
  var current_topic = topic_match[1];
  var navbar = document.querySelector('.pathname-box');
  if (!current_topic || !navbar) return;
  var forum_selector = navbar.querySelectorAll('.nav');
  var current_forum = forum_selector[forum_selector.length - 1]; if (!current_forum) return;
  var forum_match = current_forum.href.match(/\/f(\d+)/); if (!forum_match) return;
  current_forum = forum_match[1]; if (!current_forum) return;
  if (topic_ids.includes(parseInt(current_topic)) || forum_ids.includes(parseInt(current_forum))) {
    $('.signature_div').filter(function(){ this.style.display = "none" });
  }
  var cat_selector = navbar.querySelectorAll('.nav');
  var current_cat = cat_selector[cat_selector.length - 2]; if (!current_cat) return;
  var cat_match = current_cat.href.match(/\/c(\d+)/); if (!cat_match) return;
  current_cat = cat_match[1]; if (!current_cat) return;
  if (topic_ids.includes(parseInt(current_topic)) || cat_ids.includes(parseInt(current_cat))) {
    $('.signature_div').filter(function(){ this.style.display = "none" });
  }
});

Our forum is phpbb3.

PC's or mobile devices?

PCs.

Bump.

Tell them to remove IE please. Choose Chrome, Opera or Microsoft Edge instead