One time I made an order with a few things, but namely cat litter and an (expensive) air filter. The cat litter and air filter were cutely packaged together with no protection for the air filter. Of course the air filter was smashed and unusable.
I forgot this "bug" twice more and realized they weren't going to fix the issue. I determined that I should not order these items from Amazon lest they ban me for returning the filters too many times. I sent feedback each time, but I guess they'd rather just ban customers or whatever.