VIZIO OLED HDR10(+) bug

[BijouMan]

Whenever I play an HDR10 or HDR10+ disc on my VIZIO OLED, the picture is always slightly darker than it should be and when I go into Picture settings and move the Tone Mapping slider up by one step and then back to where it was, it restores the optimal brightness for as long as the display is receiving the HDR10 or HDR10+ signal. If the display then receives an SDR or Dolby Vision signal and then receives an HDR10 or HDR10+ signal again, it goes back to that slightly darker brightness until I move the Tone Mapping slider again. I do not have this issue when playing Dolby Vision discs. Does this happen with your VIZIO OLED?