Azure Access Token with Github Codespaces

Question

Hi All,
I worked with VSCode locally on my machine to develop Azure Functions. This worked very well. Now I tried to use Codesapces (which is really, really cool) but I cannot access my Azure Environment. I installed the Azure Resource extension and logged in, however, the Azure subscription does not show up, it tells me "Failed to refresh access token".
The same setup works on my machine and I have to say, I am lost.
Yes, I have the rights (the same account works on the local machine), I just signed in and I have not found a reasonable way to deal with that.
Is there somebody who can help me with this?
Thank you
Roger