Created by Oleksiy Kalinichenko 2019-02-11

File exposed_form_ajax_clear_form_state.patch Added

+diff -rupN a/core/modules/views/src/Form/ViewsExposedForm.php b/core/modules/views/src/Form/ViewsExposedForm.php

+--- a/core/modules/views/src/Form/ViewsExposedForm.php	2019-01-17 01:30:03.000000000 +0200

++++ b/core/modules/views/src/Form/ViewsExposedForm.php	2019-02-08 17:12:28.000000000 +0200

+@@ -67,8 +67,9 @@ class ViewsExposedForm extends FormBase

+     $view = $form_state->get('view');

+     $display = &$form_state->get('display');

+-    $form_state->setUserInput($view->getExposedInput());

+-

++    if (!$form_state->getUserInput()) {

++      $form_state->setUserInput($view->getExposedInput());

++    }

+     // Let form plugins know this is for exposed widgets.

+     $form_state->set('exposed', TRUE);

+     // Check if the form was already created

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