this change introduces a regression in that, the ConfigId will now be generated using the Raw original Visitor IP address, instead of using the Anonimised IP address. This is done in this event https://github.com/piwik/piwik/blob/master/core/Tracker/Visit.php#L93-102

Solution is to still pass the $ip to this object, and make sure the IP "after the Tracker.setVisitorIp hook" is used for generating the config Id (for privacy reasons)