I just discovered a huge bug online with the resurrection potions that teleport you to your last death.... it seems to work for everyone, not just the user. A friend of mine and I both died in lava at various points, and he was idling in the house we built. I died in lava gathering obsidian, and used one of these potions to get back to where I was. It took both of us back to our last death points... which was in the lava. He was completely unprepared, as I imagine he would have been, and died again. This is a huge issue....