Closed captioning broken in Chrome
We are seeing a problem with captioning in Chrome vs IE 11 when publishing to html5. In Chrome the captions and the audio volume controls are stacking underneath the slide content. In IE they stack correctly over the slide content. (see the attached images.)
I'm thinking that this relates to the stacking context (https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Positioning/Understanding_z_index/The_stacking_context).