<!DOCTYPE html>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
<link rel="help" href="https://crbug.com/1203387">

<table style="writing-mode: vertical-lr">
  <caption style="background:yellow" >
    <textarea style="height:10%">abc</textarea>
  </caption>
</table>
