I started A minecraft server recently and I'm using Parzi's Star Wars mod and Whenever I pace down a modded Block it dissapears from my inventory and the world in creative mode. I importted a world from Aternos (I'm trying to move my world that I already Started working on) and whenever I right click on one of the modded blocks it dissapears and you can't put it back. The only way to undo the right click is to Disconnect and Reconnect. I have found that with both Me and my buddy it happens. But it only happens on your screen. We've tried allocating more ram and that didn't fix it. I can't Find anything on the internet. Please help and Thank you!