How to disable the new 2nd level navigation for portal_tabs in 5.2RC3?

1

Is there a way to disable the new 2nd navigation/menu introducted in 5.2RC3?
I can not find a related setting in the navigation control panel.

2

There should be another control panel (at the bottom)

3

Solved:

<?xml version='1.0' encoding='UTF-8'?>
<registry>
  <records interface="Products.CMFPlone.interfaces.controlpanel.INavigationSchema" prefix="plone">
    <value key="navigation_depth">0</value>
  </records>
</registry>