A Microsoft application for managing email, calendars, contacts, and tasks across devices and platforms.
Where did this leave off? I have the same problem starting yesterday. Got the new simplified ribbon and the Use Tighter Spacing option, got used to it and like it, and now it seems to be gone. What's even stranger is that it still shows in the Customize the Ribbon section in Options. But it doesn't show up in the Ribbon, which is now behaving as it was before, prior to these new features being deployed.