Unexpected subtract behaviour

[Naas-Mark]

Version 0.17 (NPM)

While using this library I stumbled upon the following unexpected result after subtracting a square model from two concentric circles:

The result should be:

Code to reproduce in the playground:

var makerjs = require('makerjs');

var rectangle = {
  paths: {
    top: new makerjs.paths.Line([-84, 226], [-82, -7]),
    bottom: new makerjs.paths.Line([32.5,227], [34.5, -6]),
    left: new makerjs.paths.Line([32.5, 227], [-84, 226]),
    right: new makerjs.paths.Line([-82,-7], [34.5,-6])
  }
};

var concentricCirles = {
  paths: {
    outerCircle: new makerjs.paths.Circle([0.5, 2], 194.005),
    innerCircle: new makerjs.paths.Circle([1.5, -0], 162)
  }
};
    
var cut = makerjs.model.combineSubtraction(concentricCirles, rectangle);

var svg = makerjs.exporter.toSVG(cut);

document.write(svg);

When making a straight rectangle, problem seems to disappear:

var rectangle = {
    	paths: {
		top: new makerjs.paths.Line([-75, 226], [-75, -5]),
      		bottom: new makerjs.paths.Line([35,225], [35, -5]),
      		left: new makerjs.paths.Line([35, 225], [-75, 225]),
      		right: new makerjs.paths.Line([-75,-5], [34.5,-5])
	}
};