diff --git a/layout/generic/crashtests/1401807.html b/layout/generic/crashtests/1401807.html
new file mode 100644
index 000000000000..7771caf65d8e
--- /dev/null
+++ b/layout/generic/crashtests/1401807.html
@@ -0,0 +1,15 @@
+<html>
+  <head>
+    <style></style>
+    <script>
+    try { o1 = document.createElement('acronym') } catch(e) { }
+    try { o2 = document.createElement('video') } catch(e) { }
+    try { o3 = document.createElement('progress') } catch(e) { }
+    try { document.documentElement.appendChild(o1) } catch(e) { }
+    try { document.documentElement.appendChild(o2) } catch(e) { }
+    try { o1.appendChild(o3) } catch(e) { }
+    try { o3.style.writingMode = 'sideways-lr' } catch(e) { }
+    try { document.styleSheets[0].insertRule('* { -moz-column-width: calc(15px); display: flow-root}', 0); } catch(e) { }
+    </script>
+  </head>
+</html>
diff --git a/layout/generic/crashtests/crashtests.list b/layout/generic/crashtests/crashtests.list
index 99fea90f1a22..25c2c32470fc 100644
--- a/layout/generic/crashtests/crashtests.list
+++ b/layout/generic/crashtests/crashtests.list
@@ -659,3 +659,4 @@ load 1367413-1.html
 load 1368617-1.html
 load 1373586.html
 load 1401709.html
+load 1401807.html
