I just started a new island and I dug to the bedrock block. I had planks and started to make a platform. I made 1 row and started to make another. When I placed the planks I about placed another until I falled into the void. I noticed that the planks vanished. I typed in /is and hit the ground on my island just in time before I died in the void. I figured it was a glitch so I decided to report the problem to the website. If you are reading this, I hope you can help me out.