LayoutTests/fast/css/has-sibling-without-parent-crash.html

<div id=host>
<template shadowrootmode=open>
    <style>
        div:has(~.next) { color:green; }
    </style>
    <div>This should be green</div>
    <div id=target></div>
</template>
</div>
<script>
document.body.offsetLeft;
host.shadowRoot.querySelector("#target").classList.add("next");
</script>