After 22B BPM rule is not working on a change

Summary:

We've got a BPM rule which was working until last week before the 22B upgrade. The rule is basically to add the "Assigned To" user as an automatic approver at the interim approval workflow status on a change. This simple rule is not working after 22B upgrade despite the rule and ruleset both are in Active status.

Content (required):

Issue can be reproduced as :

1. Create a change
2. Add the fields information ( add "Assigned To" value to Change Analyst)
3. Submit the workflow from Open to Interim Approval

Expected Result : Change Analyst must be added automatically to next Interim Approval status