Why is the javascript in Field Configuration not executed anymore?

[Service]

We use Jira Core since About 2 years.

In some of our Workflows we used the Field Description of the Summary field to automatically fill and hide it.

Here's the relating script:

<script type="text/javascript">
 jQuery("label:contains('NoSummaryField')").parent().hide();
 jQuery("input#summary").parent().hide();
 jQuery("#create-issue-submit").click(function(){
  // TODO: fetch ur summary value here
  var summary_value = "Neuer Vorgang";
  jQuery("input#summary").val(summary_value);
 });
</script>

 Unfortunatly since we updated to Jira Version 8.7.1, the script seems not to be executed anymore but is shown on the create issue screens.

With Version 8.6.1 the description wasn't shown and the script was executed.

[Dawn Fama]

Try this:

Disabling HTML in custom fields description

Status: IMPLEMENTED (eap 02)

We’re changing the default behavior of one of the global settings: Enable HTML in custom field descriptions and list item values. Now, it will be OFF by default. If your instance relies on having this option enabled, make sure to change it in Administration > System > General configuration.

https://confluence.atlassian.com/jiracore/preparing-for-jira-8-7-983794309.html

[Dawn Fama]

I have an identical issue with JS rendering for custom field