set-paper-size does not work correctly in \bookpart

[Malte Meyn]

Hi list,

set-paper-size does not work correctly when used in a bookpart:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%m

\version "2.22.1"

\bookpart {
  \paper {
    annotate-spacing = ##t
    #(set-paper-size "a5landscape")
  }
  { R1 }
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%m

The code above gives
• A4 portrait paper
• A4 landscape printable area (This effect can be seen better with 
"a4landscape".)
• A5 landscape margins

Manually setting paper-height and paper-width doesn’t work either.

Cheers,
Malte