Problem with page wide background

I can define a global background in the general tab of the design styles. So far so good. However, all posts and pages in Gutenberg then have this background displayed in the editor and I can no longer really edit my posts and pages there. Is there a way to turn this off or prevent it? Could this be right?
What am I doing wrong? Is this a bug in Bricks? Should the background be created in a different way?
I would be grateful for any advice.