Issue #3178558 by cgoffin, davidferlay: Hidden Search API Fulltext filter

src/Plugin/better_exposed_filters/filter/FilterWidgetBase.php

@@ -57,6 +57,10 @@ abstract class FilterWidgetBase extends BetterExposedFiltersWidgetBase implement
       $is_applicable = TRUE;
     }
 
+    if (is_a($filter, 'Drupal\search_api\Plugin\views\filter\SearchApiFulltext')) {
+      $is_applicable = TRUE;
+    }
+
     return $is_applicable;
   }