Disabled button still listens to click event

Please off the click event

$('.btn-move-forward').off('click');

Change it to use prop() instead.

$('.btn-move-forward').prop("disabled", true)

The disabled property only applies to form elements. This means that unless the .btn-move-forward element is a <button> or <input type="button"> then the disabled attribute will have no effect.

You can see a working example using a button here:

$('.btn-move-forward').prop("disabled", true).click(function() {
  console.log('Moving forward...');
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<button class="btn-move-forward">Move forward</button>