react-image-crop: Aspect ratio in Chrome throws console errors

I’m using the latest (1.0.0-rc3) version of react-image-crop with the following crop attributes:

const cropAttributes = {
  width: 100,
  height: 12,
  x: 0,
  y: 0,
  aspect: 1663/200
}

and I’m receiving the following error in the Chrome console: Error: <polygon> attribute points: Expected number, "0 0, 1 0, 1 NaN, 0 NaN".

Interestingly enough, this error has no effect on the crop. Everything works as expected, the aspect ratio is locked, the height, width, and coordinates are also correct, even with different values.

It seems that the inclusion of aspect in the attributes is the only thing that causes this error. Also, if the aspect is the only attribute specified, no error occurs:

const cropAttributes = {
  aspect: 1663/200
}

I suspect this might be an issue with webkit but I’m not 100% certain.