After playing a while I started to grab and swing the packed box backwards without looking, so I can do the job as fast as I can, because I don't want to get automated.
There's some visual bug on the box when I try to pack it fast, the "flaps" are at a offset and it seems that they are floating mid air, although they don't actually affect the gameplay as the boxes are still counted as sealed. Using apk version btw.
