Defer and jQuery( document ).on( ‘ready’, function() {…

I have been using this plugin for a few weeks and I noticed that there are a couple of issues when jquery is defered and there are blocks of code (NOT inline but on external scripts which depend on jQuery.js) like

jQuery( document ).on( 'ready', function() {...

Those are not executed and don’t even throw a javascript error in the console! – I was surprised by the last one.

However something like this below works perfectly fine

document.addEventListener('DOMContentLoaded', function() {
	...
}, false);

Is there any way to handle this behavior without making render blocking the jquery.js?