Interpolating the following gives a 'Uncaught TypeError: Cannot read property 'push' of undefined':

const toggledPathCurved = "M0.9,19c-9.2,0,56.5,0,48.4,0C34.3,19,32,0.6,25.1,0.6S12.4,19,0.9,19z";
const disabledPathCurved = "M0.9,38c-9.2,0,56.5,0,48.4,0c-15,0-17.4,0-24.3,0S12.4,38,0.9,38z";

While these paths work fine:

const toggledPathSimple = "M20,380 L380,380 L380,380 Z";
const disabledPathSimple = "M20,20 L20,380 L380,380 Z";

I'm guessing it has to do with the curves.