Cropping pictures in iOS issue

Hello,

I would like to know if somebody else experience the following issue:

After cropping a photo using the native iOS photo application, the images are being sent as "original" size either by email, dropbox, etc.. I also connected my iPhone via USB, browse the picture folders and noticed that the pictures still in original size. In simple words, cropping does not work as expected.

On the iPhone itself, I can see the images perfectly cropped, but is when I want to "export" it or copy it somewhere else that I have this problem.

Any help?

P.S: I tried also on my iPad2 and the results were the same.

Thanks in advance.