In my flow people can choose also groups as approver. everything works as expected just the mail in the inbox of the approvers doesn´t change in approved o rejected after approval.
If the approver is a person it´s ok.
that's with a person as approver (if rejected):
That's if a group member approves (after approval):
If I click again to approve it states that approval is no longer active what's ok, but the status of the mail should change in approved or rejected.