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I'm not sure if it's the same bug I have noticed before, but I'm pretty sure it's been around for a while. It seems to be an issue with how iOS photo app deals with transparency in images. I noticed it on iOS 6 as well.
 
Not working on 7.0.3 on my 5s. It's just showing black pictures.. I saved about 10 of them to make sure I hadn't just deleted an all black picture.

Edit: never mind.. looks like I hadn't deleted anything. I just deleted a photo and it worked. That's messed up!
 
I'm not sure if it's the same bug I have noticed before, but I'm pretty sure it's been around for a while. It seems to be an issue with how iOS photo app deals with transparency in images. I noticed it on iOS 6 as well.

I think even as long as ios5
 
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