Reloading already loaded pictures

When scrolling up again, pictures already loaded are loaded again, when you scroll down again, the images are also loaded again and so on... Then, when reaching the bottom, this fenomen stops (sometimes).

This is not always the case. It seems to be random. It's not reliable enough to use on a production website to avoid a bad UX.

Using the JAIL 0.9.9 version and jQuery Update module.