Hi, NR 1.3.2 on slurs <https://lilypond.org/doc/v2.25/Documentation/notation/slurs> gives this as the second example on what slurs can do:
%%% EXAMPLE 1 %%% \version "2.25.19" { <c' ~ f' \=1 ( g' \=2 ( >2 <c' e' \=1 ) a' \=2 ) >2 | } %%% END %%% With the docs' default staff size, this produces good output: [image: 1-correct-at-default-staff-size.png] But a bug appears if the global staff size is set to any value less than 20. %%% EXAMPLE 2 %%% \version "2.25.19" #(set-global-staff-size 16) { <c' ~ f' \=1 ( g' \=2 ( >2 <c' e' \=1 ) a' \=2 ) >2 | } %%% END %%% [image: incorrect-at-staff-size-16.png] %%% EXAMPLE 3 %%% \version "2.25.19" #(set-global-staff-size 14) { <c' ~ f' \=1 ( g' \=2 ( >2 <c' e' \=1 ) a' \=2 ) >2 | } %%% END %%% [image: incorrect-at-staff-size-14.png] Note that staff sizes larger than 20 points render well. The bug only appears at smaller staff sizes. Looking through the tracker, it's possible this is a clue for #5616 Slurring individual notes in chords yields ugly results <https://gitlab.com/lilypond/lilypond/-/issues/5616>. It's also possible this is a separate bug. Trevor. -- Trevor Bača www.trevorbaca.com soundcloud.com/trevorbaca