Grouping is broken: select some objects and group them. Select a separate set and group those.
I end up with all objects in one group. As is there is no check if the group already exists.
The group is named Group01.
If I first rename the existing Group01 to something else, the new group will be separate and named Group01
Does anyone else see this as well?
Rhino 6 SR2 2018-2-12 (Rhino 6, 6.2.18043.22301,
EDIT: Related observation I think:
I ran Make2D with the option to group the output. I ended up with many groups named Group01: