I've traced some of my problem to my admin character always being infinitely invisible II and having infinite saturation on log-on. I seem to have traced it to Multiverse-Core. If core isn't loaded, then I can clear the potions, re-log, and the potions aren't re-added. The moment I put multiverse-core back in, the potions are re-added on logon. I've tried disabling groupmanagerx, and also remming out the g:vanish_moderator and g:vanish_admin ... but those don't stop it happening. I also attempted deleting the configuration folder for multiverse-core, but even with a fresh config, the same happened. I've been through the multiverse-core configs and the wiki, but I can't see anything obvious. My last ditch will be to update multiverse core, but I don't want to risk unbalance things, so I'm asking here before I do that. gamemode 0 removes invisibility, but not saturation. gamemode 1 immediately restores invisibility. Also, changing worlds doesn't affect the issue. Code: [17:19:54] [Server thread/INFO]: Starting minecraft server version 1.12 [17:19:54] [Server thread/INFO]: Loading properties [17:19:54] [Server thread/INFO]: Default game type: SURVIVAL [17:19:54] [Server thread/INFO]: This server is running CraftBukkit version git-Spigot-7228328-11323bf (MC: 1.12) (Implementing API version 1.12-R0.1-SNAPSHOT) [17:19:54] [Server thread/INFO]: Server Ping Player Sample Count: 12 [17:19:54] [Server thread/INFO]: Using 4 threads for Netty based IO [17:19:54] [Server thread/INFO]: Debug logging is disabled [17:19:54] [Server thread/INFO]: Generating keypair [17:19:54] [Server thread/INFO]: Starting Minecraft server on *:50500 [17:19:54] [Server thread/INFO]: Using epoll channel type [17:19:54] [Server thread/INFO]: Set PluginClassLoader as parallel capable [17:19:55] [Server thread/INFO]: [dynmap] Loading dynmap v2.6-beta-1-Dev201807082003 [17:19:55] [Server thread/INFO]: [dynmap] version=git-Spigot-7228328-11323bf (MC: 1.12) [17:19:55] [Server thread/INFO]: [dynmap] Mod Support API available [17:19:55] [Server thread/INFO]: [WorldEdit] Loading WorldEdit v6.1.7;dd00bb1 [17:19:55] [Server thread/INFO]: [PerWorldInventory] Loading PerWorldInventory v1.8.0 [17:19:55] [Server thread/INFO]: [CityWorld] Loading CityWorld v3.02 [17:19:55] [Server thread/INFO]: [GroupManagerX] Loading GroupManagerX vGMBuildVer (Phoenix)+1 [17:19:55] [Server thread/INFO]: [Multiverse-Core] Loading Multiverse-Core v2.5-b719 [17:19:55] [Server thread/INFO]: [WorldGuard] Loading WorldGuard v6.2.1;84bc322 [17:19:55] [Server thread/INFO]: [CraftBook] Loading CraftBook v3.9-SNAPSHOT-720ba29 [17:19:55] [Server thread/INFO]: [Multiverse-Portals] Loading Multiverse-Portals v2.5.0-b751 [17:19:55] [Server thread/INFO]: [Multiverse-NetherPortals] Loading Multiverse-NetherPortals v2.5-b675 [17:19:55] [Server thread/INFO]: [CityWorld] Enabling CityWorld v3.02