Since PHP 8.2
The from_string and date_string properties were added for DateInterval instances that were created using the DateInterval::createFromDateString() method.
When cloning this property is not taken into account which causes issues (some DateInterval properties get ignored)
Removing the DateIntervalFilter doesn't work.
Solution example : return new DateInterval($element->format('%rP%yY%mM%dDT%hH%iM%sS'));