CB Login Module shows twice

I positioned the CB Login module to the right template position and it is available on all pages. But if i click on "Register" i see the CB registration form in the content area but the CB Loginmodule on the right, which would be ok, but the same, but enlarged on template's left position.

How can i get rid of the the Loginmodule on the left position?

Best

I think i should add, that the template is based on Helix III; perhaps we have a incompatibility here? The template makers deny and told me to ask the makers of Community Builder

Thanks for help
Best

CB version?
Have you checked the CB Configuration registration tab paramaters?

There is one that addresses this.