[Interactive Video]"full screen" button dissapears when viewed in smaller screen mobile device

There's a glitch in a interactive video where, if the video is viewed in smaller screen size phone (For ex: Iphone SE) , the "full screen" button dissapears.

For example when I view this H5P content emebedded in WordPress on Iphone SE (both using Chrome and Safari):

https://blogs.ubc.ca/riesandbox/107-2/

The "full screen" button on the interactive content dissapers, so I couldn't watch and play the interactive video in full screen. 

 Is there a workaround around this or will there be update on video player? 

 

 

Thank you,

Rie

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