Crop fails to work as expected on iOS8 Photos app
I can't reproduce that behavior. All kidding aside about handsomeness - I'm getting the expected crop on all "selfie" camera shots.

I've tested on the original iPhone mini and iPhone 5 with iOS 8 so far.

It's almost like a retina bug where it's counting pixels instead of points. Perhaps it's a 2x error that needs to be reported to Apple if you can reproduce it on another device that's the same hardware as yours.