Ionic 4 on browser mobile cannot zoom and cannot hide browser bars on scroll

I would like to use my Ionic 4 app also for the browser but i cannot zoom on mobile and when scroll the status bars of the browser (eg safari ones on iOS) are not hidden. The page is “static”, i mean, seems like the scroll is inside ionic of it but not in the browser.
How can i fix it?
Here my beta website

Can someone help me? I didn’t find a solution

2021 and we still don’t have an answer.

This is one of Ionic’s biggest mobile iOS web UX issues EVERYONE sleeps on. Safari’s toolbars collapse only when the scrolls. By default Ionic disables scrolling on the and uses overflow-scroll which Safari ignores.