Bug: Ios safari webview jumps up when user clicks on postinumero

[EsaMakinen]

When user clicks on postinumero field on HS Ios app, the screen jumps up and the field disappears from view.

[Doniee]

Just to keep this info saved somewhere, these were the initial issues:

• iPhone8/Safari (possibly within the app?), the form disappears if a number input (how many days...) is focused
• iPhone8 (inside the app) "To reproduce the bug: first activate the day selector, how many days you have been sick. Then go down and activate the postal number selector" -> page scrolls up.

This is hard to test and debug without some kind of app development setup. But there was also some weird scrolling behaviour in mobile Safari, for example iOS 11 iPhone 8 Safari it scrolls down to the end of the form (or to the comment section) when the Start button is pressed. And on iPhone 7 scrolls to the bottom on submit. Could be related to the focus changes that we make with JS to ensure accessibility (the focus is moved to the appearing content so the page scrolls there, and maybe Safari somehow scrolls the wrong amount).