Some areas of MultiPolygon not returning from pointInLayer

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I'm having a weird issue with a MultiPolygon not returning the layer when clicking on said layer.

I've modified the example you created to highlight the issue I am seeing:
http://rousseau.io/leaflet-pip/

Code for the site can be found here:
https://github.com/jvrousseau/leaflet-pip/blob/gh-pages/site/site.js

Here is the GeoJSON for the polygon that is shown in the example:
https://github.com/jvrousseau/leaflet-pip/blob/gh-pages/site/broken.js

Please let me know if there is any other information I can provide.

More than likely, I am either doing something wrong, or the GeoJSON is bad in some way, shape, or form. Please let me know if that's the case.

Reproduce the failure using the example at http://rousseau.io/leaflet-pip/, then inspect site/site.js and the GeoJSON in site/broken.js. Trace the pointInLayer result for clicks across the MultiPolygon and compare it with a working polygon. Done means the affected MultiPolygon areas return their layer consistently, with the example still behaving correctly.

Written by the indexing model from the issue text.