line_string#simplify only returns two points

[mklnz]

I haven't dug down deep in the code yet but no matter what epsilon I choose the simplify method returns a line_string object with only two points starting from about 2000 points.

Are there certain limitations on line_string#simplify?

This is the gpx file I'm testing:
https://gist.github.com/mklnz/0415d8bcf20c0cbf8456c97d18d929dc

[nofxx]

Hello @mklnz !
Gonna check it, also, have in mind this is a very old library, has it uses but isn't receiving much love.
There's something more robust, and also more maintained: https://github.com/rgeo/rgeo