Yes, but i have custom cloud configuration, not an ootb cloud configuration.
And my configuration don't have a serviceUrl property.
And if serviceUrl is missing, the picture from /etc/designs/default/0.gif is loaded. (see responsible code)

But the picture under /etc/designs/default/0.gif does not exist. This one was moved to /libs/settings/wcm/designs/default/resources/0.gif.
But the reference in the ootb js file under /libs/cq/cloudserviceconfigs/widgets/source/CloudServicePanel.js was not changed.
This is AEM bug!