Xbox Series X - Upgraded to X|S Optimized Version now HDR doesn't work

After updating to the optimized version HDR isn't working anymore. Can confirm on Reddit there are others who are having the same issue.

Hey there @f1r3h4wk3, thanks for the report! We're aware of this issue and are currently investigating.

I got a small 250mb update just there but HDR hasn't been fixed with it still.