Please update port as this is fixed in 0.10.9 Reference: https://github.com/igraph/igraph/releases/tag/0.10.9
Might as well add that 0.10.12 is the latest version upstream as of writing.
(In reply to Daniel Engberg from comment #0) Done.
Fixed as of 234db307b7008035ff5e0b08acca1129c429bb9a Thanks!