Please update gmsh port http://gmsh.info/CHANGELOG.txt 4.1.0 (January 13, 2019): improved ONELAB and Fltk support in API; improved renumbering of mesh nodes/elements; major code refactoring.
A commit references this bug: Author: fernape Date: Tue Jan 22 18:38:59 UTC 2019 New revision: 490969 URL: https://svnweb.freebsd.org/changeset/ports/490969 Log: cad/gmsh: update to 4.1.0 PR: 235037 Reported by: chitty_cloud@me.com Changes: head/cad/gmsh/Makefile head/cad/gmsh/distinfo head/cad/gmsh/files/ head/cad/gmsh/pkg-plist
Thanks!