Help with Microsoft Edge watching a stream in full screen light mode.

Hello, I have recently swapped to microsoft edge on my macbook air 2018, I have really enjoyed it in terms of the responsiveness and resource management. I just have one minor issue that I was wondering if anyone else has experienced.

When using light theme viewing a stream on twitch.tv in full screen an odd white bar that is the size of a pixel appears at the top of the screen. This completely disappears if I use dark mode.

Attached is a screen shot to show what I am talking about. 

It is a minor issue and have been impressed with how microsoft edge has been running on my mac, and if push comes to shove ill just deal with using dark mode.

I just prefer light mode, has anyone got any tips or tricks to fix this?