When modifying the Title of a node and submitting the form without triggering the ajax search for duplicates,
the changes to the title textfield are not submitted.
This has something to do with what what is described here => https://api.drupal.org/api/drupal/core!core.api.php/group/ajax/10#sec_query
If a form uses an Ajax field, all the query parameters in the current request will be also added to the Ajax POST requests along with an additional 'ajax_form=1' parameter
The title change is not tracked by the URL constructing logic in the RenderElement::preRenderAjaxForm();
as a result the POST-ed request does not include the title field and its respective changes.
As a workaround, in this issue, I propose a 'debounce_keyup' approach that changes the event that triggers the Ajax callback (in which case the 'title' field is properly added and its value POSTed via AJAX).
Post a patch
Fixed
4.0
Code
Automatically closed - issue fixed for 2 weeks with no activity.