The last couple of emails are being created with the incorrect reported email address.
Instead of picking the address in the from line, it is using the to: address.
This created a delay in us getting back to the customer because when we replied with a comment from within the ticket, the email was sent to our own address.
Our setup is via GSuite. We created a Google Group with our email and then added the support@atlassian email as a member so that all emails are delivered to Atlassian as well. We did this precisely to avoid this issue we are reporting.