I believe this is caused by the commit here:
4f90cf5
I would like an explanation why was this check added and how come even on a clean 2.4.3-p1 copy I am able to recreate this error?

Preconditions (*)

1. Magento 2.4.3-p1
2. PHP 7.4.13

Steps to reproduce (*)

1. Install clean copy of Magento 2.4.3-p1 without sample data
2. Create virtual product with a price of $10
3. Place order with that product and invoice it in the Admin so that credit memo is possible
4. Press the credit memo button and go ahead and create one
5. In the

order view loaded after the creditmemo saved, scroll to bottom of page where comments section status dropdown is

Expected result (*)

1. The status dropdown should only show the 'Closed' option, that way when a comment is added to this closed order - it does not set it to 'Complete'.

Actual result (*)

1. order state is never set to closed when the refund saves successfully, while the status does update to closed in the db
2. order status dropdown in comments section showing only 'Complete' option which will cause any new comment which will be added to revert the order status from 'Closed' to 'Complete'

• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.