'blackpetrucci' stem attachment

[Jean Abou Samra]

Hi,

On lilypond-user-fr, a user wonders about this:

\version "2.23.6"

{
  \override NoteHead.style = #'petrucci
  c'8
  \override NoteHead.style = #'blackpetrucci
  c'8
}


If you zoom on the output, you can see that the attachment
point for blackpetrucci is not centered horizontally.
Is this on purpose?

Thanks,
Jean