Horizontal alignment of figured bass figures

Hey all,

I've noticed that Lilypond left-aligns figured bass figures with
respect to their notes. This works well enough for note values up to a
minim, but I've noticed it looks off for the wider note heads of
semibreves and breves.

Example:

  % The figures are left-aligned on the notes, but I want them centered
  \version "2.26.0"
  <<
  { \time 3/1 f''\breve 1 }
  \figures { <6 4>\breve <5 3>1 }
  >>

It seems that none of the relevant figured bass grobs support the
self-alignment-interface, which is how you'd usually configure
horizontal alignment. Is there something I'm missing, or is this a
shortcoming in Lilypond?


All the best,
Antonie