I just started testing 1.19 on an iPhone X and noticed that the default zoom level and the zoomed in levels BOTH go beyond the “notch” at the top of the device. I do not believe this is the desired behavior. I think the default zoom level should only use the area of the screen without the notch and then zoomed would go beyond it.
Well, that’s odd. Now it is not behaving this way. Perhaps this is an intermittent problem. Hmmm.
Depends on the aspect ratio of the video. Anyway, it’s fixed in the upcoming beta 
Thanks for reporting!