1 files changed, 10 insertions, 8 deletions
diff --git a/layout/reftests/webcomponents/input-transition-1.html b/layout/reftests/webcomponents/input-transition-1.html
index ede0fa40b..c11444d05 100644
--- a/layout/reftests/webcomponents/input-transition-1.html
+++ b/layout/reftests/webcomponents/input-transition-1.html
@@ -5,19 +5,21 @@
   <body>
     <div id="host"></div>
     <script>
-      var host = document.getElementById("host");
-      var root = host.createShadowRoot();
+      var host, root;
+
+      host = document.getElementById("host");
+      root = host.attachShadow({mode: 'open'});
       root.innerHTML = '<style>input ~ div { background: red; transition: background 100ms; } input:checked ~ div { background: green; }</style><input id="one" type="checkbox"><div style="height: 50px; width: 50px;"></div>';
 
       function tweak() {
-          var el = root.getElementById("one");
-          el.checked = true;
-          el.nextSibling.addEventListener("transitionend", function() {
-            document.documentElement.removeAttribute("class");
-          }, false);
+        var el = root.getElementById("one");
+        el.checked = true;
+        el.nextSibling.addEventListener("transitionend", function() {
+          setTimeout(()=>{document.documentElement.removeAttribute("class")}, 1000); // wait for the checkbox SVG image to load on Android
+        });
       }
 
-      window.addEventListener("MozReftestInvalidate", tweak, false);
+      window.addEventListener("MozReftestInvalidate", tweak);
     </script>
   </body>
 </html>