Hi,
I have my key signature to a custom quarter tone where every A and D are a quartertone lower.
But whenever I play D or A, it places a natural sign next to them! However, when I enter with a mouse or keyboard, the notes are entered correctly without quartertone accidentals.
Is there a way to fix this, please?
No, unfortunately not, because your MIDI keyboard really does input only notes with 12-EDO pitches corresponding to accidentals whose increments are in 1/12 divisions of the octave. Dorico treats the input from your MIDI device as absolute in terms of pitch.
That is OK. I wish we could program Dorico ( in Preference) to enter notes when Scale is quartertone, enter notes according to the key signature in the staff.
def insert (Note myNote,Duration T, Scale_EDO-24 = True): // overriding staff insert attribute
d_min= closest note in the scale to myNote
if myNote.pitch is not in Key & distance(myNote, d) == QUARTERTONE:
myNote.insert(d, T)We’ll just copy and paste that code into the program, and that’ll take care of it, then…! 
What a shame your team didn’t think of that before.
Apparently they did not think of that they did not implement it! Second, I said I wish! If my wishes can come true so easily, I must be the luckiest person in the world! 
That is right! please don’t forget to send me a check for that alogn with a tax form. I need it to report it as my first income in 2021!