Bug: Windows 10 "Night light" is not applying to YouTube videos

in Edge Dev 83.0.474.0 on Windows 10, the "Night light" setting is not applying to videos on YouTube (it may not be specific to youtube.com I'm just too lazy to check over video sites right now). I'm using Windows 10 v1909.

Here's a little hint as to what might be going on: when I click the maximize/minimize button, I can see Night light applying to the video for a half a second.

Can anyone else repro this?