Hi alexbchalmers,
Apologise for the inconvenience. I would like you can send us a feedback about this case. If you have any questions or have additional information to add to your previous suggestion, I would suggest you submitting a feedback at http://mymfe.microsoft.com/Microsoft%20Online%20Services/Feedback.aspx?formID=210.
On the other hand, in order to do the feature research or narrow down the problem. You may need to provide other personal information about the issue in the future. As a result, we would need to continue the troubleshooting directly to avoid publishing some personal information, such as the customer’s Service Request number and domain information.Your post was responded in a private message with a subject of "Submit a service request". Please check it on the community side. You can reply by using the form in that private message.
Thanks, Neo Zhu