I carried that "thingy" (sans pictures) around all day yesterday, reading when I landed anywhere for more than five minutes. I'm now to Known Issues. That's a bunch of issues . . .
Reading . . .
When you open
Control Panel\All Control Panel Items\System
the menu toolbar is now hidden by default.
Alt makes the menu toolbar visible. Right-clicking anywhere along the toolbar brings a checkbox for lock the toolbar.
However I try, the toolbar will not remain locked:
there it is checked
menu toolbar still there
there the toolbar is gone: