Comment 6 for bug 487144

The workaround above has been suggested before there:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=532913

Following the trace we get to this inkscape bug for the x11 version:
https://bugs.edge.launchpad.net/inkscape/+bug/336435

It really looks like a gtk/quartz upstream bug. Something that has been fixed on the X11 side, but not on the quartz side.