Video issue when in full-screen mode on mobile

We are testing a module on our mobile devices. When the SCORM package opens in full-screen mode, the "action buttons" do not work.  However, if I take it out of full-screen mode then the action buttons work.   

I thought this might be a publish settings issue, but this is only happening on iOS devices.   The Android device does not open the SCORM in full screen and there is no option to make it full screen. The module plays with no issues. This makes me think it's NOT a publish settings issue.

Has anyone ever had this issue? If so, how did you resolve? It has nothing to do with Flash, as Flash met its demise.

I'm attaching a video capture the shows what is happening.  Frankly, the video is not very helpful. It's probably easier to understand from the description.

Thanks for any help you can provide!