I have 188ms to my server, and I have noticed that especially when crafting it can be very glitchy. It is very hard to explain, but I will try. With glitchy I mainly mean that, if you craft stuff quickly with a high ping/latency, items you placed will appear to be not placed anymore client side, or that you have crafted a hoe instead of a pick. The items are where you placed them server side, but client side it appears it gets "undone". One way to easy reproduce this is to make planks, and then make 3 sets of bowls. Which means that you take planks, right click three times in each slot. If you have a high ping, you should notice that some of the blocks simply just dissapears. But they are still there server side, if you try to press in one of the empty slots where you placed planks, you will pickup planks since they are there server side but not client side. I tried this on a new server that _only_ ran Spigot #933, no plugins. I've had this issue on previous builds too. Other users can also confirm this. These users are also far away from where the server is hosted, so they may even have higher ping then me which results in even more issues. One person I tested it with had about 200 ms ping. To reproduce this you want to craft the bowls as I said earlier, and you want a ping that is fairly high; about 150ms or higher. The higher the better. Is this knowned? Is there any one else that can confirm these issues? Thanks.