Merge v0.9.0 (#730)

v0.9.0

renderer/controllers/playback-controller.js

@@ -54,8 +54,8 @@ module.exports = class PlaybackController {
 
     // force rerendering if window is hidden,
     // in order to bypass `raf` and play/pause media immediately
-    if (!state.window.isVisible) {
-      var mediaTag = document.querySelector('video,audio')
+    var mediaTag = document.querySelector('video,audio')
+    if (!state.window.isVisible && mediaTag) {
       if (state.playing.isPaused) mediaTag.play()
       else mediaTag.pause()
     }

renderer/views/player.js

@@ -524,6 +524,7 @@ function renderPlayerControls (state) {
 
   // Handles a click or drag to scrub (jump to another position in the video)
   function handleScrub (e) {
+    if (!e.clientX) return
     dispatch('mediaMouseMoved')
     var windowWidth = document.querySelector('body').clientWidth
     var fraction = e.clientX / windowWidth