--- a/dom/animation/test/mozilla/file_restyles.html
+++ b/dom/animation/test/mozilla/file_restyles.html
@@ -1746,74 +1746,77 @@ waitForAllPaints(() => {
     await ensureElementRemoval(div);
   });
 
   add_task(async function restyling_transform_animations_on_invisible_element() {
     if (isAndroid) {
       // FIXME: Bug 1470798: Enable this test on Android.
       return;
     }
-    // 'opacity: 0' prevents transform animations to be sent to the compositor.
-    const div = addDiv(null, { style: 'visibility: hidden; opacity: 0' });
+    const div = addDiv(null, { style: 'visibility: hidden;' });
 
     const animation =
       div.animate({ transform: [ 'none', 'rotate(360deg)' ] },
                   { duration: 100 * MS_PER_SEC,
                     iterations: Infinity });
 
     await waitForAnimationReadyToRestyle(animation);
 
+    ok(!SpecialPowers.wrap(animation).isRunningOnCompositor);
+
     const markers = await observeStyling(5);
 
     is(markers.length, 0,
        'Transform animations on visibility hidden element should be throttled');
     await ensureElementRemoval(div);
   });
 
   add_task(async function restyling_transform_animations_on_invisible_element() {
     if (isAndroid) {
       // FIXME: Bug 1470798: Enable this test on Android.
       return;
     }
-    // 'opacity: 0' prevents transform animations to be sent to the compositor.
-    const div = addDiv(null, { style: 'visibility: hidden; opacity: 0' });
+    const div = addDiv(null, { style: 'visibility: hidden;' });
 
     const animation =
       div.animate([ { transform: 'rotate(360deg)' } ],
                   { duration: 100 * MS_PER_SEC,
                     iterations: Infinity });
 
     await waitForAnimationReadyToRestyle(animation);
 
+    ok(!SpecialPowers.wrap(animation).isRunningOnCompositor);
+
     const markers = await observeStyling(5);
 
     is(markers.length, 0,
        'Transform animations without 100% keyframe on visibility hidden ' +
        'element should be throttled');
     await ensureElementRemoval(div);
   });
 
   add_task(
     async function restyling_transform_animations_having_abs_pos_child_on_invisible_element() {
       if (isAndroid) {
         // FIXME: Bug 1470798: Enable this test on Android.
         return;
       }
-      // 'opacity: 0' prevents transform animations to be sent to the compositor.
-      const div = addDiv(null, { style: 'visibility: hidden; opacity: 0' });
+      const div = addDiv(null, { style: 'visibility: hidden;' });
       const child = addDiv(null, { style: 'position: absolute; top: 100px;' });
       div.appendChild(child);
 
       const animation =
         div.animate({ transform: [ 'none',  'rotate(360deg)' ] },
                     { duration: 100 * MS_PER_SEC,
                       iterations: Infinity });
 
       await waitForAnimationReadyToRestyle(animation);
 
+      ok(!SpecialPowers.wrap(animation).isRunningOnCompositor);
+
       const markers = await observeStyling(5);
 
       is(markers.length, 0,
          'Transform animation having an absolutely positioned child on ' +
          'visibility hidden element should be throttled');
       await ensureElementRemoval(div);
   });