I'm running a few tests on PMM after a customer opened a ticket mentioning the QAN is not working on their env. And in fact, I noticed when authentication is enabled QAN doesn't show any data.
Our internal ticket is: https://percona.zendesk.com/agent/tickets/207584 kamil.dziedzic joined the call to check with the customer the possible reasons but we don't have access to their environment. for this reason, I've created a test machine to share my test case to try to help with that issue.
Please see the steps I used to reproduce the issue:
Please let me know if you need more details to investigate this case.