Series X - Netflix HDR washed out colors

Add me to the list. I have a Vizio M55-D0, firing up Netflix causes washed out colors and is system wide until Netflix is exited out of. Even when playing an HDR title (Marco Polo) HDR isn't turning on and the colors are still washed out. Using SmartCast
HDR works just fine with Netflix.

I have the same issue with my sony X850e - it's really ****, Netflix doesn't care - I've talked to their support many times. Everything works great on my One X and my TV except for Netflix. Boots up and the entire App is HDR - dark, gray, and washed-out
colors. If I disable HDR on my tv or xbox and reset the app it looks/works fine.

I have this problem on my Samsung 65" KS9000. I will get a message from the TV that HDR content is playing and then the video goes dull/washed out. The TV video settings themselves haven't changed. If I view the TV menu or open an app on the TV, color
is normal. When I minimize GOW4 or Netflix, the Xbox dashboard is dull and washed out. If I open a non HDR Xbox app like Youtube, colors will go back to normal. Go back into Gears of War 4, Netflix or the Bluray player, video goes bad. Even adjusting in
game brightness/HDR and the TV settings will not help because the color is so bad.

I have the same issue but it happens with anything HDR including Forza Horizon 3. When content with HDR enabled kicks in the Xbox flashes black and then auto dims until the app that is using HDR is closed. It really sucks because it washes out the colors.
The Netflix app on my TV with HDR doesn't do this so it rules out my TV as the issue. What's going on?

My Vizio p55-C1 has the exact same issue. I know it's most likely not the HDR functionality of my TV because HDR works fine when playing back UHD Blu-Ray movies. When I launch Netflix the colors get washed out across the system. Even the UI is effected.
When I close the Netflix app, all goes back to normal.