For first point test PR #23026.

Second point is correct, I think. It calls parent's save() method which should return a boolean. See https://github.com/joomla/joomla-cms/blob/b7673120c5b26544756c5bb50e1695c5dfaa820f/libraries/src/MVC/Controller/FormController.php

@SharkyKZ parent::save might return something to this function, but this fuction DOESNT return that value, it returns void, when the documentation states it returns a boolean.

maybe this function should add return like

return parent::save($key, $urlVar);

or the documentation should be updated to state the return type is void.

Yes, you're right. There are several instances of this.

Test PR #23048 please.

Set to "closed" on behalf of @Quy by The JTracker Application at issues.joomla.org/joomla-cms/23021