1 files changed, 16 insertions, 0 deletions
diff --git a/dom/base/crashtests/1623918.html b/dom/base/crashtests/1623918.html
new file mode 100644
index 0000000000..0c991acbbc
--- /dev/null
+++ b/dom/base/crashtests/1623918.html
@@ -0,0 +1,16 @@
+<html>
+<head>
+    <script>
+      window.addEventListener('load', () => {
+        const anchor = document.getElementById('id_7')
+        anchor.contentEditable = 'true'
+        anchor.spellcheck = false
+        const input = document.createElementNS('http://www.w3.org/1999/xhtml', 'input')
+        anchor.appendChild(input)
+        const selection = self.getSelection()
+        selection.selectAllChildren(input)
+      })
+    </script>
+</head>
+<a id='id_7'></a>
+</html>