Improve the UX of the workspace state selector.

modules/entity_workflow_workspace/src/EntityWorkflowWorkspaceListBuilder.php

@@ -58,10 +58,24 @@ class EntityWorkflowWorkspaceListBuilder extends WseWorkspaceListBuilder {
     }
     $form['status']['#title'] = $this->t('State');
     $form['status']['#options'] = $options;
+    $form['status']['#empty_option'] = $this->t('- All open -');;
 
     return $form;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $url = new Url('<current>');
+
+    if ($status = $form_state->getValue('status')) {
+      $url->mergeOptions(['query' => ['status' => $status]]);;
+    }
+
+    $form_state->setRedirectUrl($url);
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -75,6 +89,9 @@ class EntityWorkflowWorkspaceListBuilder extends WseWorkspaceListBuilder {
         return !$state || $state === $status;
       });
     }
+    else {
+      parent::filterByStatus($entities);
+    }
   }
 
   /**