Hey there. You may have to turn off HDR then adjust the Destiny 2 display settings, then turn HDR back on.
I'll give that a go but it'd sure be odd considering it was working fine with my account on the same Xbox/display.
Also, its very similar to the issue I was having a while back except previously, the display was very blown out. See the original post: https://www.bungie.net/en/Forums/Post/249866367?page=0&sort=0&showBanned=0&path=1