Hi Werner,
In any case, here are images again as attachments. They don't look
like Werner's.
Assuming that you run under GNU/Linux: Try to recreate all FontConfig
files with `fc-cache --really-force` (probably as a superuser, too).
I sometimes got issues with that.
Yes, I'm under Mint 20.3.
Unfortunately, fc-cache --really-force (great command btw...) and sudo
fc-cache --really-force didn't solve the problem.
With LilyPond 2.23.6 and 2.23.7, the behaviour is correct, but 2.23.82
still produces the empty rectangles if no combination of accidental
_with figure_ occurs in the ly file.
Lukas
