xbox one x HDR/SDR screenshots

I have the xbox one x with a 4k tv it does take the 4k hdr pictures its just when they upload to my phone or twitter it looks like the sdr version and not 4k hdr

Take a look at this :

"Xbox One X als UHD Blu-ray Player: SDR besser als HDR?"
in youtube

I have the exact same problem with HDR.

Moreover, in games, I see no differences with the HDR feature activated or deactivated

Thank you for your answer, but I think you did not understand my question. To sum up: 4k doesn't matter.

The problem is that hdr blu-rays work fine on ps5 (good colors).

So the HDR to SDR conversion is correct. But on xbox series x, in comparison with ps5, the picture is too dark.

So the HDR to SDR conversion on the xbox series x is bugged. I don't think it's a washout color issue.

You and the Xbox support team told me that this issue has been in preview before. I don't know if it's true because I don't see anything like these being posted before. The HDR screenshot complain I mostly see is that the picture is too dark but I didn't
mind that since the HDR colors were better looking than SDR.

Now, DVR HDR screenshots look like they were taken from the The Great Depression. It saddens me that the quality of the HDR screenshots vanished away from one day to the next.

Take a look at this :

"Xbox One X als UHD Blu-ray Player: SDR besser als HDR?"
in youtube

I have the exact same problem with HDR.

Moreover, in games, I see no differences with the HDR feature activated or deactivated

Thats strange because I have exactly same TV and difference With or without HDR is huge and colours are not washed out in games