Sadly I don't think there is much they can do about it because it's not a bug with the servers, it's a bug with how Minecraft handles bad internet. The only way to fix it is to get better internet. If you do have perfect Internet then it might be something with you client. When you login click "options" then "force update" and see if that helps. Ever since I hooked up directly to the router using an Ethernet cable this has stopped happening and I always get the chest.