I am not sure if this is the correct place for this issue, but as of today, when I am using the API Explorer in the Developer Center, with browser storage enabled, I am not able to save my Dark Mode setting as well as use the account switcher feature. I get the below warnings pop up
One of my colleagues appears to have the same issue, but another does not.
I also have cleared my whole browser and logged back in and it's still the same.