Small copy of image in the left corner

[just-boris]

Hello! I have managed to find a reason that cause that problem. It can be easily reproduced with Polymer logo, for example:

The problem occurs only with images with transparent background. So my guess is that emoji-llate component has two hidden canvas tags that you are using for conversion. Then _getPixellatedImageData receives not clean data but some merged result from these 2 canvases that affect each other.

I hope it will help to fix the problem!