[css-viewport] zoom and scroll propagation to the viewport. #9911
Description
When document.scrollingElement == document.body (so, in quirks mode when the <body> is propagated to the viewport), things like document.body.scrollTop return the viewport scroll position etc.
The question then becomes, with something like:
<!quirks-mode>
<body style="zoom: 2">
<div style="height: 3000px"></div>
<script>
onload = () => {
document.body.scrollTop;
document.body.scrollTop = 500;
};
</script>
</body>Should those coordinates be unscaled by the <body> zoom or not?
I think Chrome's behavior is not unzooming them, which makes sense to me.