TOPIC: password length when using account creation

I am using Joomla3 / and CB registration. I have enabled the option to create an acoount automatically and that works. Strange thing is that I have to enable Joomla user registration because I also have CB user registration / login.

When I register for the event I can fill a password of 4 characters while I have set Joomla registration for a minimum of 7. How to fix?