We're now having some users getting errors when they sign in with the "restrict" in place, even though they match the regex. And by error i mean, it just prompts to sign in then nothing happens, they don't even get an informational dialog.
My best guess is their profile from the start has been "wrong" type wise.
This is not good enough Microsoft.
You need to revert this deployment and kill Edge for Business until it's ready, meaning proper administrative controls, or you need to give us an ability to kill this personal mode thing immediately.
How is it possible Microsoft still don't realise, your corporate customers do not all want consumer features dropped onto corporate devices with no control. You have got to do better. You used to be good at this.