Demo files are converted from previous versions of MuseScore and are not laid out correctly
I don't know whether most users even know the demo scores exist. In 1.3 there were more than twenty included; in 2.0 and 2.0.1, there are three. But those three are simply the 1.3 versions, saved in 2.0's format. As we all know, scores created with 1.3 will not necessarily look the same in 2.0. There's really not much work needed, but it should be done.
In Triumph, for example, the coda at the measure before "Interlude" seems to be an unknown character, the first and second endings in the fourth line don't have their horizontal bar, and repeat texts clash with chords. In Reunion, almost every manually positioned thing is in the wrong place, or is shaped wrong, in the case of slurs—and for some reason the quarter note in the tempo text is placed wrong, too.
Just putting it out there that this is an issue.