I have a time aware raster service embedded in a story map. It is working well, except for one small thing - if the story map is opened in Internet Explorer, the time slider play button does not appear. You can click on the area where the play button should live, and the animation will play, but the button is not visible. This is not the case when the story map is opened in Chrome, where the play button is visible. Any thoughts? Is this a bug in the time aware app, by chance?