Polygon not cut with north-south trending axe line in southern hemisphere

[dhollema]

With a north-south trending cut line, a polygon in the southern hemisphere does not get split. If I up the buffer distance to 10^-8 here,

_axe = buffer(line, 0.000000001, 'meters').features[0], // turf-buffer issue #23

the split does occur as expected. The _axe is an empty geometry with a buffer distance of 10^-9. I'm working in Australia. I haven't been able to reproduce this in the northern hemisphere but don't know if that has any relevance yet.