4 ways Groups are broken/working illogically

Not sure if this is new behaviour after the latest update. Two weird group behaviours I noticed:

1. When I have items inside a group and select 2 of them and press command+g, it does nothing. However when I put them inside a group outside of that group and then drag the group inside the other group it does that without any issues. It also works when I select multiple groups and press command+g.

2. When a group is minimized in the layer panel, I can't drag anything inside of it. While the expected behaviour would be that anything dragged onto a closed layer/group would place that item on top within the layer/group, OR expand the layer/group so it can be placed inside.

3. When I have a group selected and place a new object, it doesn't place it inside the group but on top of it. Even though I double clicked the object so I was actually inside the group. That makes 0 zense. Would be nice to at least have the option to change that behaviour. 

4. Why is it a single click to change the group name and not double click (like in other software?) Double clicking in the layer panel doesn't seem to do anything now.