Bug in 2FA login for new users needs to be fixed
If you enable 2FA for a secondary user without them having first logged in so that they supply an email address (in response to the prompt about 'enabling new features') then they will get stuck in an endless loop of failed 2FA when they subsequently try to log in.
Thank you for pointing this out. Our internal team has confirmed this unexpected loop and will be working to correct it within the system.
Update:
On June 8th, a release was pushed to the system that corrected this unexpected loop. Please test out the system and let us know if everything is working as expected on your end.