Should add: tree lines under Groups. No serious issue.

Those lines are a nightmare to redraw. If you manage to find the scenario to make them fail to redraw correctly, I'll be happy to correct that.

I've seen this after adding or removing parts our groups to a group. Hard to duplicate.

Maybe one day we can find these couple of special cases that make it fail. It didn't happened to me yet.

Work with groups on a larger model and you will see it.

Yep, i´ve seen it to! I´ll try to reproduce the bug...

Just found another bug with groups. Move up and Move down is not checking for closest group but also include parts. So if a part is just before/after in the tree, it will move it before/after the part and therefore it looks like nothing has happen in the group outliner. Oups, will have to correct that asap.

Corrected bug with move up/move down.