Be better so to fix in the source to use a different selector method so ID isn't a factory. Will see about resolving at source for next releases. For the time being please editor source as necessary to change the selector. Resolved with new jQuery for removing the logout button. The below will be "immune" to suffix.
$_CB_framework->outputCbJQuery( "$( 'form[id*=mod_login_logoutform]' ).find( 'input[type=submit]' ).remove();" );
Will be available for next release, for time being please make change manually for quick fix.