Those new viewport units only fix the issues with retractable chrome as commonly employed on mobile platforms. They completely ignored the scrollbars issue whic

Those new viewport units only fix the issues with retractable chrome as commonly employed on mobile platforms. They completely ignored the scrollbars issue which has been a design bug from the very start (though there used to be a workaround—`overflow: scroll` on the body—but it was removed from the spec after only Firefox ever implemented it), which I cynically say is because it’s not an issue on mobile platforms which uniformly use overlay scrollbars.