--- a/toolkit/content/tests/widgets/test_videocontrols_error.html
+++ b/toolkit/content/tests/widgets/test_videocontrols_error.html
@@ -27,33 +27,31 @@
   });
 
   add_task(async function check_normal_status() {
     await new Promise(resolve => {
       video.src = "seek_with_sound.ogg";
       video.addEventListener("loadedmetadata", () => SimpleTest.executeSoon(resolve));
     });
 
-    // Wait for the fade out transition to complete in case the throbber
-    // shows up on slower platforms.
-    await SimpleTest.promiseWaitForCondition(() => statusOverlay.hidden,
+    await SimpleTest.promiseWaitForCondition(() => statusOverlay.hasAttribute("fadeout") || statusOverlay.hidden,
       "statusOverlay should not present without error");
 
     ok(!statusOverlay.hasAttribute("error"), "statusOverlay should not in error state");
     isnot(statusIcon.getAttribute("type"), "error", "should not show error icon");
   });
 
   add_task(async function invalid_source() {
     const errorType = "errorNoSource";
 
     await new Promise(resolve => {
       video.src = "invalid_source.ogg";
       video.addEventListener("error", () => SimpleTest.executeSoon(resolve));
     });
 
-    ok(!statusOverlay.hidden, `statusOverlay should show when ${errorType}`);
+    ok(!statusOverlay.hidden && !statusOverlay.hasAttribute("fadeout"), `statusOverlay should show when ${errorType}`);
     is(statusOverlay.getAttribute("error"), errorType, `statusOverlay should have correct error state: ${errorType}`);
     is(statusIcon.getAttribute("type"), "error", `should show error icon when ${errorType}`);
   });
 </script>
 </pre>
 </body>
 </html>

--- a/toolkit/content/widgets/videocontrols.xml
+++ b/toolkit/content/widgets/videocontrols.xml
@@ -1015,32 +1015,16 @@
           element.setAttribute("fadeout", true);
           if (element.classList.contains("controlBar") && !this.hasError() &&
               document.mozFullScreenElement == this.video) {
             this.controlsSpacer.setAttribute("hideCursor", true);
           }
         }
       },
 
-      onTransitionEnd(event) {
-        // Ignore events for things other than opacity changes.
-        if (event.propertyName != "opacity") {
-          return;
-        }
-
-        var element = event.originalTarget;
-
-        // Nothing to do when a fade *in* finishes.
-        if (!element.hasAttribute("fadeout")) {
-          return;
-        }
-
-        element.hidden = true;
-      },
-
       _triggeredByControls: false,
 
       startPlay() {
         this._triggeredByControls = true;
         this.hideClickToPlay();
         this.video.play();
       },
 
@@ -1769,17 +1753,16 @@
         // On touch videocontrols, tapping controlsSpacer should show/hide
         // the control bar, instead of playing the video or toggle fullscreen.
         if (!this.videocontrols.isTouchControls) {
           addListener(this.controlsSpacer, "click", this.clickToPlayClickHandler);
           addListener(this.controlsSpacer, "dblclick", this.toggleFullscreen);
         }
 
         addListener(this.videocontrols, "resizevideocontrols", this.adjustControlSize);
-        addListener(this.videocontrols, "transitionend", this.onTransitionEnd);
         addListener(this.controlBar, "transitionend", this.onControlBarTransitioned);
         // See comment at onFullscreenChange on bug 718107.
         // addListener(this.video.ownerDocument, "fullscreenchange", this.onFullscreenChange);
         addListener(this.video, "keypress", this.keyHandler, {capture: true});
         // Prevent any click event within media controls from dispatching through to video.
         addListener(this.videocontrols, "click", function(event) {
           event.stopPropagation();
         }, {mozSystemGroup: false});

--- a/toolkit/themes/shared/media/videocontrols.css
+++ b/toolkit/themes/shared/media/videocontrols.css
@@ -437,60 +437,55 @@ audio > xul|videocontrols {
 
 .controlsSpacerStack:hover > .clickToPlay,
 .clickToPlay:hover {
   opacity: 0.55;
 }
 
 .controlsSpacerStack:hover > .clickToPlay[fadeout] {
   opacity: 0;
+  visibility: hidden;
 }
 
 .controlBar[fullscreen-unavailable] .fullscreenButton {
   display: none;
 }
 
 /* CSS Transitions */
-.clickToPlay {
-  transition-property: transform, opacity;
-  transition-duration: 400ms, 400ms;
-}
-
-.controlsSpacer[fadeout] {
-  opacity: 0;
+.clickToPlay:not([immediate]) {
+  transition-property: transform, opacity, visibility;
+  transition-duration: 400ms, 400ms, 400ms;
 }
 
 .clickToPlay[fadeout] {
   transform: scale(3);
   opacity: 0;
+  visibility: hidden;
+}
+
+.controlBar:not([immediate]) {
+  transition-property: opacity, visibility;
+  transition-duration: 200ms, 200ms;
 }
 
-.clickToPlay[fadeout][immediate] {
-  transition-property: opacity, background-size;
-  transition-duration: 0s, 0s;
-}
-.controlBar:not([immediate]) {
-  transition-property: opacity;
-  transition-duration: 200ms;
-}
 .controlBar[fadeout] {
   opacity: 0;
-}
-.volumeStack:not([immediate]) {
-  transition-property: opacity, margin-top;
-  transition-duration: 200ms, 200ms;
+  visibility: hidden;
 }
+
 .statusOverlay:not([immediate]) {
-  transition-property: opacity;
-  transition-duration: 300ms;
-  transition-delay: 750ms;
+  transition-property: opacity, visibility;
+  transition-duration: 300ms, 300ms;
+  transition-delay: 750ms, 750ms;
 }
+
 .statusOverlay[fadeout],
 .statusOverlay[error] + .controlsOverlay > .controlsSpacerStack {
   opacity: 0;
+  visibility: hidden;
 }
 
 /* Error description formatting */
 .errorLabel {
   padding: 0 10px;
   text-align: center;
   font: message-box;
   font-size: 14px;