Description:
The one I uploaded earlier, >>2743639, was acquired from Twitter, and evidently Twitter converts PNG's into JPG, thus killing the transparency support, and even asking Twitter for a PNG gives just a JPG->PNG conversion which doesn't support transparency either (lacks the alpha channel); it's just an extremely lazy (and unnecessarily complicated) file format conversion instead of storing the original PNG.
Not to mention that the files from Twitter are of lower resolution.
