Same here. After updating to 1.0 some images inside the starting viewport get loading, some are not. If I scroll a minimum amount all pictures in the viewport get loaded.
I noticed another false behaviour, too: I’m using upprev. The images inside the upprev-box are getting loading right at the beginning of a page visit. The images inside could be lazy loaded because the images are only shown if the visitor scrolls about 70% down the page. But at the moment the page is loaded, the image-name is shown an the site of the page (and is hidden if I scroll a minimum amount down…).
Downgraded to 0.75 for now, first impression is important 🙂