Possible bug with cautionary accidentals

[Phil Holmes]

With this input:

{
 #(set-accidental-style 'modern-voice-cautionary)
 \clef bass
 ces4 ces ces ces |
 c4 c c c |
}

I get a cautionary in the second bar up until 2.15.16 (which I believe I 
would expect) but none in 2.15.18.    I reckon this is a bug, but would like 
someone who does this stuff to confirm that it's not a deliberate change 
(for some reason).

--
Phil Holmes

Acc2.15.18.png
Description: PNG image

Acc2.15.16.png
Description: PNG image