On a product node there is form with a button “add to cart” that is implemented with form API (ajax):

$  form['add_to_cart'] = array(   '#type' => 'button',   '#value' => $  this->t('Add to cart'),   '#ajax' => array(     'callback' => 'Drupal\custom_cart\Form\AddToCartForm::addProductToCart',     'event' => 'click',     'effect' => 'fade',     'wrapper' => '#custom-cart',      'progress' => array(       'type' => 'throbber',     ),   ) ); 

This works as expected.

For a product overview page we render out product nodes with a view (node teasers) and the view includes some exposed filters. If the view is ajax enabled the ajax callback from the “add to cart” button (breaks) and returns a 404 error:

Request URL:http://foobar.lo/views/ajax?_wrapper_format=drupal_ajax Request Method:POST Status Code:404 Not Found

Does somebody know how to fix this (core patches anywhere?) or a workaround you know?

Thanks for any advice