Why does my Pixel Xl go to sleep in my left hand

[Android Central Question]

I have been having a issue with my Pixel XL where it will go to sleep when I move the phone to my left hand when in it's vertical.As soon as it goes back in my right hand the screen comes on and it mostly happens with YouTube and the app appygamer . I have tried googling it but haven't seen any threads about it.

 

[belodion]

Finger rings, bracelets, watch?