The design is made much more usable.

It scales much better, but still need some work on that front. The
navbar seems to hinder very low width (approx < 600 px), which might be
a problem for some devices.  However the menu now collapses correctly on
sx. Large screens suffer a bit - the navbar should not be justified,
more like container than container-fluid.

Submenu's in scaffolded mode is bad.

The default tab bug is still there.