🇧🇪Belgium HnLn
I can also confirm the patch works.
🇧🇪Belgium HnLn
This patch does apply on beta6, but throws a notice:
Warning: Undefined variable $max in Drupal\multivalue_form_element\Element\MultiValue::processMultiValue() (line 234 of modules/contrib/multivalue_form_element/src/Element/MultiValue.php).