CKEditor not loading on chrome (Failed to execute 'send' on 'XMLHttpRequest')

Problem/Motivation

CKEditor doesn't load on chrome 119

Steps to reproduce

Try to load ckeditor on any page.

Proposed resolution

Remove "async" from the ajax call to ckeditor xss endpoint.

From what I read here: https://stackoverflow.com/questions/32878613/networkerror-failed-to-exec...
CORS should also fix it, it was not the case on our server, removing "async: false" fixed it.