We have some automation rules for jira service desk to notify the reporter of an issue about the ticket creation or assignment.
It works fine most of the time, but occasionally the rule fails to execute because the "To" field is empty on the outgoing email:

We have zero control about how the reporter field is filled, and we can observe that the email if actually valid if we navigate to the issue page.
I assume this is some kind of race condition.
Any pointers on how to surpass this?