Always a problem. There are people who send small children to the bin who can't lift the lid, & some who do a drive by with rubbish hanging from the wing mirror. In both instances, the rubbish ends up outside the bin.
I would like to say I knew how to solve the problem, but this tale suggests otherwise.
I saw a guy struggling with armfulls of branches, & I challenged him about it. He said nothing but turned away & walked off. I went out, came back a couple hours later, & as I passed the bin, there was all his garden waste plus more, on the floor by the bin.
Moral? If you challenge someone, be prepared to follow them home or stand guard for a long wait.