skia does not split the into separate paths

[typemytype]

left: the source (as pasted below)
middle: booleanOperations
right: skia

the issue is that it should be 3 paths instead of 2

<?xml version="1.0" encoding="UTF-8"?>
<glyph name="A" format="2">
  <advance width="500"/>
  <outline>
    <contour>
      <point x="46.0" y="60.0" type="line"/>
      <point x="47.0" y="60.0"/>
      <point x="90.0" y="383.0"/>
      <point x="186.0" y="371.0" type="curve" smooth="yes"/>
      <point x="282.0" y="359.0"/>
      <point x="394.0" y="248.0"/>
      <point x="365.0" y="171.0" type="curve" smooth="yes"/>
      <point x="336.0" y="94.0"/>
      <point x="238.0" y="254.0"/>
      <point x="129.0" y="280.0" type="curve" smooth="yes"/>
      <point x="20.0" y="306.0"/>
      <point x="43.0" y="218.0"/>
      <point x="89.0" y="155.0" type="curve" smooth="yes"/>
      <point x="135.0" y="92.0"/>
      <point x="379.0" y="55.0"/>
      <point x="379.0" y="55.0" type="curve"/>
    </contour>
  </outline>
</glyph>

[typemytype]

also updated my drawBot test script, so it draws an indicator when the amount of contours are different
https://gist.github.com/typemytype/ada7589bd2a564cefac681f45c3374e5

[typemytype]

a simplified example

left: the source (as pasted below)
middle: booleanOperations
right: skia

<?xml version="1.0" encoding="UTF-8"?>
<glyph name="M" format="2">
  <advance width="500"/>
  <outline>
    <contour>
      <point x="67" y="219" type="line"/>
      <point x="67" y="424" type="line"/>
      <point x="279" y="424" type="line"/>
      <point x="279" y="219" type="line"/>
    </contour>
    <contour>
      <point x="179" y="290" type="line"/>
      <point x="346" y="290" type="line"/>
      <point x="346" y="351" type="line"/>
      <point x="179" y="351" type="line"/>
    </contour>
  </outline>
</glyph>