why az login stopped using browser and now uses "email and accounts". How to revert it?

I use az login for long time. It always showed Chrome browser for login. But now it uses "Email and accounts" windows feature.

When I execute az login the following popup window is shown:

And the Task Manager shows "Emails and accounts" running:

It started behaving this way after executing az account clear, but I don't know if it is the cause.

Why it stopped showing browser?

And how can I revert it? I would like az login to show browser instead of email and accounts login popup.

I had this issue. Similar to Lesamel, I used the following to fix this on Windows:

az config set core.enable_broker_on_windows=false

See: Sign in with a browser

The account clear did not work for me.