Issue #3308219: Autocomplete widget value callback returns invalid value in between first set of parentheses

src/Plugin/Field/FieldWidget/TypedResourceObjectAutocompleteWidget.php

@@ -99,8 +99,8 @@ class TypedResourceObjectAutocompleteWidget extends WidgetBase {
     // If input is being submitted..
     if ($input !== FALSE) {
       // .. convert this to an ID to store.
-      $opening_bracket_index = strpos($input, '(');
-      $closing_bracket_index = strpos($input, ')');
+      $opening_bracket_index = strrpos($input, '(');
+      $closing_bracket_index = strrpos($input, ')');
       if ($opening_bracket_index === FALSE) {
         return '';
       }