Uploading a JPEG with orientation exif causes the thumbnail to be rotated wrongly. (BB-8163)

I was reporting a bug to PIL about this here: https://bitbucket.org/effbot/pil-2009-raclette/issue/33/unexpected-rotation-on-saving-a-jpeg-with the thumbnail you give my attachment has the same issue (which is quite funny, I might add). There's a workaround in the ticket I filed you can use.