--- a/layout/reftests/css-animations/reftest.list
+++ b/layout/reftests/css-animations/reftest.list
@@ -37,16 +37,16 @@ fails-if(webrender) == stacking-context-
 == stacking-context-opacity-removing-important-in-delay.html stacking-context-animation-ref.html
 == stacking-context-transform-none-in-delay.html stacking-context-animation-ref.html
 == stacking-context-transform-removing-important-in-delay.html stacking-context-animation-ref.html
 fails == background-position-in-delay.html background-position-ref.html # This test fails the reftest-opaque-layer check since animating background-position currently creates an active layer from its delay phse, and reftest-opaque-layer only handles items assigned to PaintedLayers.
 == background-position-after-finish.html background-position-ref.html
 fails == background-position-running.html background-position-ref.html # This test fails the reftest-opaque-layer check since animating background-position currently creates an active layer, and reftest-opaque-layer only handles items assigned to PaintedLayers.
 fails == background-position-important.html background-position-ref.html # This test fails the reftest-opaque-layer check since animating background-position overridden by a non-animated !important style also creates an active layer, and reftest-opaque-layer only handles items that are assigned to PaintedLayers.
 
-fails-if(stylo) == mask-position-after-finish-1a.html mask-anim-ref.html
-fails-if(stylo) == mask-position-after-finish-1b.html mask-anim-ref.html
+== mask-position-after-finish-1a.html mask-anim-ref.html
+== mask-position-after-finish-1b.html mask-anim-ref.html
 == mask-position-in-delay-1a.html mask-anim-ref.html
 == mask-position-in-delay-1b.html mask-anim-ref.html
 == mask-size-after-finish-1a.html mask-anim-ref.html
 == mask-size-after-finish-1b.html mask-anim-ref.html
 == mask-size-in-delay-1a.html mask-anim-ref.html
 == mask-size-in-delay-1b.html mask-anim-ref.html

--- a/layout/style/test/stylo-failures.md
+++ b/layout/style/test/stylo-failures.md
@@ -31,17 +31,17 @@ to mochitest command.
 
 * Media query support:
   * test_media_queries.html [156]
   * test_media_queries_dynamic.html [6]
   * test_media_queries_dynamic_xbl.html [2]
   * test_webkit_device_pixel_ratio.html: -webkit-device-pixel-ratio [3]
   * browser_bug453896.js [8]
 * Animation support:
-  * test_animations.html [19]
+  * test_animations.html [5]
   * test_animations_dynamic_changes.html [1]
   * test_bug716226.html [1]
   * OMTA
     * test_animations_effect_timing_duration.html [1]
     * test_animations_effect_timing_enddelay.html [1]
     * test_animations_effect_timing_iterations.html [1]
     * test_animations_iterationstart.html [1]
     * test_animations_omta.html [1]