Default Facebook "Related Videos" in App

Does anyone know how to get rid of the related video's that come up whilst trying to watch a Facebook video in portrait?

They take up at least a quarter of the screen making the video small, it's not really possible to watch a portrait video in landscape.

I can't find any setting for it in the app settings itself, unless I've missed something. I can't even full screen the video.

Someone must have an idea?