Issue with an embedded YouTube video played in Firefox?

Hi!

I am having an issue with embedded YouTube videos when published and viewed in Firefox. It won't let you click on the play button with your mouse or finger, but you can tab to the play button to make it work. 

Has anyone had this issue and fixed it? Most of our users will want to click on the play button and won't know to tab to it.

There is no issue with this in any other browser that I've tried (Chrome, Edge, Safari).

Thanks!
Brooke