Fields, like the ArticleField used in the Article menu item, open a modal to select the article.
However, on selecting/clearing the selection, the change event is not triggered on the hidden form field that contains the value.
This means you can't have custom javascript that triggers to the change event on those fields.

The solution is to add something like this to window.processModalParent in media/system/js/fields/modal-fields.js before the return.

fieldId.dispatchEvent(new Event('change'));
fieldTitle.dispatchEvent(new Event('change'));