Oké, the title is not very clear (so if someone know a better title please let me know).
What I mean is that with the enhanced grouping a group is now like a control. So if you set the visibility to true it will behave like a transparant label which blocks your controls under it.
This behaviour is perfect when you want to be able to set a variable to the visibility parameter off the group (as I use to make UserForms),
This behaviour is a problem when you just want to group some controles together to make the tree cleaner and easier to read (As example you can think off icons used to tricker formulas which are positioned in the top and bottom off the screen. It nice to group all these controls, but with the enhanced grouping the underlaying controls stop working)
Also I like to group groups together. Example: for my UserForms I have a basic layer and a group per UserForm (this can be multiple groups). I Just want to group them so I have one group for all UserForms. I want this to be visible, but not with a solid surface. (See atachment for the tree view)
Thinking about it, just make a group just a grouping and not like a control. We can add a label if we want to block the underlaying controls. Keep the visibility parameter, because this is a great feature.