At the moment this kind of string glissando does not play back correctly with noteperformer:
The note on beat 4 is incorrectly transposed down a major third. It would be nice if this was fixed in future!
Another (perhaps related) issue: If I start playback on beat 4 on this example, I will hear A (instead of E). This may seem like a minor thing, but in a score with lot of glissandos it can be actually very tricky to find a place where to start the playback (so that every note is played back correctly)
