Issue #3206488 by Liam Morland, kpaxman, Neslee Canil Pinto: Description is...

Issue #3206488 by Liam Morland, kpaxman, Neslee Canil Pinto: Description is not displayed when a filter is made collapsible

src/Plugin/better_exposed_filters/filter/FilterWidgetBase.php

@@ -214,6 +214,7 @@ abstract class FilterWidgetBase extends BetterExposedFiltersWidgetBase implement
       $form[$field_id . '_collapsible'] = [
         '#type' => 'details',
         '#title' => $exposed_label,
+        '#description' => $exposed_description,
       ];
 
       if ($is_secondary) {