disable-form-elements.js reads property on null

I am experiencing this issue as well on Drupal 10.3.5.

I have the same problem, temporary solution to remove bug is:
if (instance != null && $.inArray('ajaxGetDisplayOptions', instance.callback) !== -1) {

But for some reason, probably Drupal.ajax.instances method changed in D10 and now is returning sometimes null in the loop.
Drupal.ajax.instances.forEach(function (instance) ...{

Similar problem was here: https://www.drupal.org/project/drupal/issues/2897938 →

Temporary fix for error here: