Fullscreen Mode kills Audioplayer on scrolling out of viewport

Hi, it seems that the Audioplayer stops when it´s scrolled out of the viewport/Window. This only happens in fullscreen mode, not in the embeddeed frame. 

I tested this in the interactive book 1.13.5  and Page 1.20.2 libraries. I didnt test it with the videoplayer. I am using the wordpress plugin. 

I was working in the previous version without the new design. Is there a way to change that behavior. I want to keep the player running regardless if it was scrolled out of the viewport. 

Many thanks in advance!