I did some tests of the new group feature within https://demo.bpmn.io and something feels a little bit strange.
Group provides a border on the canvas and I can add a label.
But it seams to be not possible to add other elements into the group.
I place a group at the canvas and put a task on or into the group.
Now if I move the group, the task does not move with the group.
My expectation is if I move the group, the group is moving with all childs.
Is it planned to extend the group feature in that way?