Hello! Great plugin, only one problem so far. I have MobDisguise installed and when I disguised as a enderdragon then undisguised, then turned invisible, people were saying that the boss health bar was still at the top of their screens. when I turned visible again it was gone, but until I restarted my server whenever I turned invisible the boss heath bar would show up. I have Bukkit version 1.0.1-R1 and Spout build 644, and version 1.8.8 of your plugin. This isn't a big problem at all as I've since been unable to recreate it, but I thought it was worth mentioning here.