Javascript modification removed from description field - code still executes..?

[Bleddyn Raw-Rees]

This question is in reference to Atlassian Documentation: How to hide elements in Confluence using CSS or JavaScript

I wrote some Javascript to show/hide the due date field based on a custom field checkbox I called hard deadline. This worked fine but I wanted to change it to radio buttons so I removed the code from the description except the field still appears/disappears based on the click of the checkbox... Very strange indeed! 

Has anyone encountered this? Or does anyone have any thoughts? Any help would be greatly appreciated.

Here's the code:

/*

<script type="text/javascript">
deadline= document.getElementsByName('customfield_10406')[0];
if (deadline) {

deadline.addEventListener('click', function() {
target = document.getElementById('duedate');
trigger = document.getElementById('duedate-trigger');

// Hide the target field depending on whether checkbox is checked
if (deadline.checked) target.style.display='none', trigger.style.display='none', target.value="";

else {
target.style.display='initial', trigger.style.display='initial';
}
});
}
</script>

*/

[Bleddyn Raw-Rees]

Actually the problem doesn't even look javascript related. For whatever reason, any changes I make in the custom field description section (even if just plain text) aren't appearing on the issue creation screen....

Still stumped.