A separate bisect indicates Jonas’s problem was (also silently?) fixed upstream in commit 908a139753380160563a9d3dbf17fe3d3e4d6fdc, https://gitlab.com/graphviz/graphviz/-/commit/908a139753380160563a9d3dbf17fe3d3e4d6fdc. This one landed in Graphviz 2.40.0.
Bisect indicates Arnaud’s original problem was (silently?) fixed
upstream in commit a02eaec8af5a200bd04ee15c07f53108aa102438,
https://gitlab.com/graphviz/graphviz/-/commit/a02eaec8af5a200bd04ee15c07f53108aa102438.
This landed in Graphviz 11.0.0.
