This can be normal behavior, especially since the cage as a plastic, slick, bottom, so sliding and pushing hay is going to happen pretty natural. Note if you have two intact female rabbits together (assumably young), they likely have what’s called a baby bond, which is a false bond which can dissolve quickly and rapidly upon one of them becoming hormonal. It can lead to fights/injuries in an instant when that happens, so for safety and prevent accidental pregnancy (in case one is missexed), please separate them both from each other and have them spayed, and then you go through the proper bonding process after one month – https://binkybunny.com/infocategory/bonding/
Note that rabbits do not have pads on their feet like dogs and cats, so they are always wearing fuzzy socks. They need appropriate flooring (i.e., not plastic/tile) or else they cannot move comfortably nor exercise well.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.