diff --git a/dom/base/crashtests/1369363.xul b/dom/base/crashtests/1369363.xul
new file mode 100644
index 000000000000..82c9edd3b079
--- /dev/null
+++ b/dom/base/crashtests/1369363.xul
@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" 
+        xmlns:xhtml="http://www.w3.org/1999/xhtml">
+<xhtml:div id="root">
+<xhtml:div id="target">
+</xhtml:div>
+</xhtml:div>
+<script>
+<![CDATA[
+    var io = new IntersectionObserver(function () {
+    }, { root: document.getElementById('root') });
+    io.observe(document.getElementById('target'));
+]]>
+</script>
+</window>
diff --git a/dom/base/crashtests/crashtests.list b/dom/base/crashtests/crashtests.list
index 0fdeed85e134..387db9933d18 100644
--- a/dom/base/crashtests/crashtests.list
+++ b/dom/base/crashtests/crashtests.list
@@ -214,4 +214,5 @@ pref(dom.IntersectionObserver.enabled,true) load 1326194-2.html
 pref(dom.IntersectionObserver.enabled,true) load 1332939.html
 pref(dom.IntersectionObserver.enabled,true) load 1353529.xul
 pref(dom.webcomponents.enabled,true) load 1341693.html
+pref(dom.IntersectionObserver.enabled,true) load 1369363.xul
 load 1370072.html