Stop droplab from destroying itself is handled async

app/assets/javascripts/boards/filtered_search_boards.js

@@ -3,11 +3,12 @@ export default class FilteredSearchBoards extends gl.FilteredSearchManager {
     super('boards');
 
     this.store = store;
-    this.destroyOnSubmit = false
+    this.isHandledAsync = true;
   }
 
   updateObject(path) {
     this.store.path = path.substr(1);
+
     gl.issueBoards.BoardsStore.updateFiltersUrl();
   }
 }

app/assets/javascripts/filtered_search/filtered_search_manager.js

@@ -105,8 +105,14 @@
         e.preventDefault();
 
         if (!activeElements.length) {
+          if (this.isHandledAsync) {
+            e.stopImmediatePropagation();
+            this.filteredSearchInput.blur();
+            this.dropdownManager.resetDropdowns();
+          } else {
             // Prevent droplab from opening dropdown
-          //this.dropdownManager.destroyDroplab();
+            this.dropdownManager.destroyDroplab();
+          }
 
           this.search();
         }