SmartCrawl breaks VisualComposer

If SmartCrawl is not enabled on a site, Visual Composer works fine. When network enabled, it immediately causes VC to use "backend mode" as default instead of 'classic mode' (visual editor). Also a layerslider shortcode disappears from layerslider field on page editing screen.

To test that, simply try to edit the page on main site of the multisite with and without SmartCrawl enabled.