Same happend to me. Let me know if you find a solution. So far I am using “TouchBarServer.app” to compensate. I think I found it on Github
Thank you for the guide! Und die deutsche Übersetzung natürlich!
I could change the display successfully even though I dont have a lot of experience in this stuff. I have to warn though that these models are very fragile; I probably broke my touchbar in the process. Its not responding to touch interactions anymore.