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diff --git a/testing/web-platform/tests/css/css-tables/caption-writing-mode-002.html b/testing/web-platform/tests/css/css-tables/caption-writing-mode-002.html
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+++ b/testing/web-platform/tests/css/css-tables/caption-writing-mode-002.html
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+<!DOCTYPE html>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<link rel="author" title="David Grogan" href="dgrogan@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-writing-modes-3/#orthogonal-flows">
+<style>
+x-table {
+  display: table;
+  width: 300px;
+  height: 300px;
+  writing-mode: vertical-lr;
+  outline: 2px dashed blue;
+}
+x-caption {
+  display: table-caption;
+  height: 200px;
+  width: 200px;
+  writing-mode: horizontal-tb;
+  outline: 1px solid black;
+}
+</style>
+
+<x-table>
+  <x-caption>caption</x-caption>
+</x-table>
+
+<script>
+let body_height = document.querySelector("body").offsetHeight;
+test(() => {
+  assert_greater_than(body_height, 0, "Vertical table with horizontal caption doesn't make <body> have crazy height.");
+  assert_less_than(body_height, 10000, "Vertical table with horizontal caption doesn't make <body> have crazy height.");
+})
+</script>