Custom text not working in demo

[rowanbradley]

I have copied your demo page lock stock and barrel onto my site. None of the examples in your demo file are displaying the custom message. The warning box always says:
Do you want to leave this site?
Changes that you made may not be saved.
Prevent this page from creating additional dialogues.
[Leave|Stay]
I haven't made any changes to your code (other than to change the location of the JS files to match my site, and to use the latest version of JQuery).

Another small issue. Why is it correct to say "Changes that you made MAY not be saved". Under what circumstances would they have been saved? I thought the point of this code was only to put up the alert if the user HAD made changes, and HAD NOT saved them. In which case why isn't it more accurate to say "Your changes HAVE NOT been saved"?

Thanks - Rowan

[pawamoy]

Same here, tried to customize message with

$(function() {
  $('#question-form').areYouSure({
    'message': 'If you leave before saving, your changes will be lost.'
  });
});

But the alert box shows the default message which is This page is asking you to confirm that you want to leave - data you have entered may not be saved.

Edit: I'm on Firefox 56. I see in another issue that Chrome does not allow changing the sentence, maybe it's the same for Firefox.