Fa notehead is not shared.
Fa notehead is not shared when two voices have a note at same place.
The first image shows that Fa notehead is not shared on MuseScore: Unstable Prerelease for Version 2.0.3, Revision:c01dd01.
I also have: MuseScore Version 2.0.2, Revision: 3543170 and it gives the same result as shown in first image.
The second image shows what Fa notehead should look like acording to my song book, and to what I have found on internet. The Fa notehead is turned one direction on Treble Clef, and the other direction on Bass Clef.