The problem isn't how to get normal color HDR on Windows, that's already solved by Xbox Screenshot, but Xbox Screenshot is very slow and doesn't automatically copy to your pasteboard. And it does not support partial screenshots. Sometimes the Xbox screenshot process will even get stuck, and you need to enter the task manager to kill the process before you can use it. So Xbox screenshots are not a user-friendly solution.
If the Xbox screenshot is very fast, but does not support automatic copying, then I can also write a python watchdog program to automatically copy new pictures on the hard disk to the pasteboard. Unfortunately, Xbox screenshots usually take more than 1.5-2 seconds from pressing the shortcut key to getting the screenshot, and even 5-10 seconds if it is used for the first time after booting. Therefore, the best solution still requires Microsoft to fix the bug in its system screenshot tool.