Hi
Sorry to hear that you're experiencing this issue!
I am Bhavik, an Independent Advisor and a Microsoft user like you. Please note, I am not a Microsoft employee and don’t have direct access to your account, but I will do everything I can to help you with your queries. :)
After you setup the default output for the first time and open the Chrome and play some videos, does it play from the headset or the desktop speakers?
I just want to verify whether this issue occurs for that particular game only or for other apps as well.
Thanks
Bhavik
An Independent Advisor