Because of a quirk of my employment, my AAD account was deleted and recreated, which means I now have two Azure DevOps accounts with the same email, one of which is unlicensed (and not attached to an AAD identity). It is fairly random which one it tries to sign me in with, and every once in a while clicking on a link in ADO will sign me out because it got confused about who I was. It’s insane, and there’s no way to nuke the old account.