While reading through the 3 version manual for Mac, I noticed an interesting feature called “Focus Mode” on page 391. This feature has not been implemented in the Windows beta so far. There is also no toolbar button for this feature. The feature is missing from composition mode.
This is not implemented yet in Scrivener for Windows. Some functionality is scheduled for the next release Beta 12, but it would be only the “Direct Speech” feature. All the rest is something which Scrivener for Mac uses out of the box from the Mac OS, but is a huge effort to implement under Windows.