Fix loading.. dropdown at search field

Closes #61313

app/assets/javascripts/search_autocomplete.js

@@ -407,6 +407,7 @@ export class SearchAutocomplete {
     if (this.searchInput.val() === '') {
       return this.restoreOriginalState();
     }
+    this.dropdownMenu.removeClass('show');
   }
 
   restoreOriginalState() {

changelogs/unreleased/61313-fix-dropdown-searchbar.yml

+---
+title: Fix loading.. dropdown at search field
+merge_request: 28275
+author: Pavel Chausov
+type: fixed