I've created a automation rule which updates the service request type after the issue has been moved from service request to incident.
After the issue has been updated, the issue data is refetched. After that a comment is posted on the issue and a mail should be sent to the assignee.
All goes well accept for the mail to be sent.
The audit log shows that the mail should be sent, but the assignee doesn't receive anything.
In my search I saw that a request type should by assigned, hence the issue update.
This is my audit log:

Can you please help me solve this issue?