Usertoolbars Window Layout Style Vertical and collapse groups

Toolbars with vertical windows layout have a problem with closing groups. The group itself collapses vertical. But the buttons are still maintained as horizontal. Means the buttons are visible, and gets sorted underneath.

Hm, shouldn`t a vertical group have its titlebar at the side instead of the top? This would be at the same moment a request. I would love to be able to use vertical groups where the titlebar just works as a handler to close or open a vertical group.

Fixed.