So I generated a new world in bukkit 1.2.3-R0.1 and I see this bug really often now, those wines are growing on invisible blocks, when you place a block on those blocks, the block appears, and you get back your placed block, it often occured in generated villages in 1.1, but now it's in rainforests. Edit: Here's more pics That's how it generates. That's how it looks when I rejoin the server, could this be OptiFine? EDIT: Same without OptiFine :/ I have Vault 1.2.12, bPermissions 2.9.1 and iConomy 6.0.9b Anyone? EDIT by Moderator: merged posts, please use the edit button instead of double posting.