GitHub Actions: "You've used 100% of included services for GitHub Storage (GitHub Actions and Packages)" after deleting all Artifacts

The guys on GitHub told me that I have to write the support and I did so. The solution was that I had to set a spending limit. After setting my spending limit to 1$ everything works fine.

They told me that this is an estimation not the real data. I still think this a bug or at least pretty bad Usability but the solution worked for me.

After setting the spending limit GitHub told me that I am using 0,00GB of Storage so the delete actions actually worked. (I didn't have to pay anything)