When a user is added without any groups (or groups without roles) it can't login:
Log in as admin
Create a new user, leave all groups unchecked
Log out
Try to login as the new user
--> login does not work
In a new role is added to the token. This role is now required to log into Integrated
When the users doesn't have roles the eventlistener isn't fired
https://symfony.com/doc/current/security.html#roles "Make sure every user has at least one role, or your user will look like they're not authenticated. A common convention is to give every user ROLE_USER"
The best solution would be to add a ROLE_USER when the "Enable login" is enabled
Another option is to force ROLE_USER in the database for every user, but I don't like that solution
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