Hi @tajajtsidi,
I consider this a bug, as it is already possible to manually detach a group from its parent, so anything that can be detached should show in the detach Item from parent CoBlock.
However, I’ll leave it to @Stefan to decide whether this is a bug or a feature request.
Either way, it would be great to have it fixed, as it’s been an issue for my students too! I note that it has also been previously reported at Detaching group items - #3 by Bladebob20000
Many thanks,