Continuing the discussion from New sidebar experiment (Sidebar Feng Shui):
I have the impression tablets now get a inconvenient mix of desktop mode and touch device styling. While the design experiment added those lines on my tablet, the version merged into core does not.
Especially in the admin sidebar, the headings are difficult to recognise, as they simply get lost in the list. It works fine on desktop devices without touch, where the lines are shown, and on mobile with the gaps, but the version for touch devices in desktop mode has no lines and no gaps.
Mobile:
Desktop:
Tablet:
