Unexpected subtract behaviour

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])
	}
};

Start by running the supplied playground reproduction with makerjs.model.combineSubtraction on the concentric circles and skewed rectangle, then inspect the subtraction and SVG export path. Compare its output with the expected image and use the straight-rectangle variant as a control; done when the skewed rectangle subtraction produces the expected result.