chromium/third_party/blink/web_tests/virtual/text-antialias/vertical-surrogate-pair.html

<style>
    div { font-family: 'hiragino mincho pro'; font-size: 48px; }
</style>
<p>
    These two glyphs should look the same:
</p>
<div>&#x20b9f;</div>
<div style="-webkit-writing-mode: vertical-lr;">&#x20b9f;</div>