When you click a report and bring up the DMARC Report, if you are on a slower connection (or accessing site via external webserver) and click it twice instead of once it will bring up the report and then the authentication dialog. you can click cancel and it will go away.
Can be easily re-produced by throttling the connection in dev mode on chrome/edge etc. and following above.
Very interesting bug.
When you click a report and bring up the DMARC Report, if you are on a slower connection (or accessing site via external webserver) and click it twice instead of once it will bring up the report and then the authentication dialog. you can click cancel and it will go away.
Can be easily re-produced by throttling the connection in dev mode on chrome/edge etc. and following above.