--- a/dom/animation/test/mozilla/file_restyles.html
+++ b/dom/animation/test/mozilla/file_restyles.html
@@ -249,52 +249,60 @@ waitForAllPaints(() => {
     var div = addDiv(null, { style: 'transition: opacity 1ms; opacity: 0' });
     getComputedStyle(div).opacity;
     div.style.opacity = 1;
 
     var animation = div.getAnimations()[0];
     var initialRect = div.getBoundingClientRect();
 
     await animation.finished;
+    var markers = await observeStyling(1);
+    todo_is(markers.length, 1,
+            'Finished transitions should restyle once after ' +
+            'Animation.finished was fulfilled');
 
     var mouseX = initialRect.left + initialRect.width / 2;
     var mouseY = initialRect.top + initialRect.height / 2;
-    var markers = await observeStyling(5, () => {
+    markers = await observeStyling(5, () => {
       // We can't use synthesizeMouse here since synthesizeMouse causes
       // layout flush.
       synthesizeMouseAtPoint(mouseX++, mouseY++,
                              { type: 'mousemove' }, window);
     });
 
     is(markers.length, 0,
-       'Bug 1219236: Finished transitions should never cause restyles ' +
-       'when mouse is moved on the animations');
+       'Finished transitions should never cause restyles when mouse is moved ' +
+       'on the transitions');
     await ensureElementRemoval(div);
   });
 
   add_task(async function no_restyling_mouse_movement_on_finished_animation() {
     var div = addDiv(null, { style: 'animation: opacity 1ms' });
     var animation = div.getAnimations()[0];
 
     var initialRect = div.getBoundingClientRect();
 
     await animation.finished;
+    var markers = await observeStyling(1);
+    todo_is(markers.length, 1,
+            'Finished animations should restyle once after ' +
+            'Animation.finished was fulfilled');
 
     var mouseX = initialRect.left + initialRect.width / 2;
     var mouseY = initialRect.top + initialRect.height / 2;
-    var markers = await observeStyling(5, () => {
+    markers = await observeStyling(5, () => {
       // We can't use synthesizeMouse here since synthesizeMouse causes
       // layout flush.
       synthesizeMouseAtPoint(mouseX++, mouseY++,
                              { type: 'mousemove' }, window);
     });
 
     is(markers.length, 0,
-       'Bug 1219236: Finished animations should never cause restyles ' +
-       'when mouse is moved on the animations');
+       'Finished animations should never cause restyles when mouse is moved ' +
+       'on the animations');
     await ensureElementRemoval(div);
   });
 
   add_task_if_omta_enabled(async function no_restyling_compositor_animations_out_of_view_element() {
     if (!offscreenThrottlingEnabled) {
       return;
     }