I love that the bagpipe ornamentation tool is there, and my piper friend who helped me compose a piece recently was very impressed that MuseScore2 even had the tool available.
There are, as I see it, two problems.
There are inaccuracies with pitch - the 'concert pitch' button must always be used, pipe music I've seen is always written at concert pitch, at least for the Highland pipes. It's just that A is tuned to close to 470.
The major problem is that ornamentation timing during playback is way off.
Playback is useless with the timing of ornamentation so far off - basically it's too slow. Musescore gives too much time value to the grace notes - often times even playing them as actual 32nd notes rather than as part of the duration of the actual note they lead in to. Maybe there's a work-around for it?