Adds avatar on stage specific background

modules/UI/videolayout/LargeVideo.js

@@ -317,6 +317,15 @@ class VideoContainer extends LargeContainer {
      * @param {boolean} show
      */
     showAvatar (show) {
+        // TO FIX: Video background need to be black, so that we don't have a
+        // flickering effect when scrolling between videos and have the screen
+        // move to grey before going back to video. Avatars though can have the
+        // default background set.
+        // In order to fix this code we need to introduce video background or
+        // find a workaround for the video flickering.
+        $("#largeVideoContainer").css("background",
+            (show) ? interfaceConfig.DEFAULT_BACKGROUND : "#000");
+
         this.$avatar.css("visibility", show ? "visible" : "hidden");
     }