Hi,
I realise NWC don't apply correctly accidental:
https://en.wikipedia.org/wiki/Accidental_(music)#Standard_use_of_accidentals (https://en.wikipedia.org/wiki/Accidental_(music)#Standard_use_of_accidentals)
In this example ↓ NWC play:
F# F# F# | F F# F#
Agreed. However, for clarity, performers generally prefer to have a natural on the octave note if the accidental isn't meant to apply to it. Less chance of error that way.
The Warn column in Tools, Score Review (https://noteworthycomposer.com/nwc2/help/MNU_SCOREREVIEW.htm) will indicate the presence of any unassigned octave accodentals.
You can use Edit, Find (https://noteworthycomposer.com/nwc2/help/MNU_FIND.htm) to identify and correct any unassigned octave accidentals.