1- Fixed, I removed the enchanting table at hub spawn.
2- Fixed (The structure was the Ultra Hardcore spawn which was built in Hub but as we already put it in the UHC Server I removed it at hub as it wasn't needed anymore
3- Fixed! Now when you do /spawn at jigsaw all your effects and inventory is cleared and you are healed

4- I know, this minor bug will be fixed soon! Meanwhile you can do /plotme deny <player> to deny a specific player or /plotme deny * to deny everyone from your plot so they don't troll your item frames

I still added this to the list o' bugs
5- Players are no longer able to place or world edit TnT anywhere, so don't worry. You may find TnT scattered through the admin's world of players who put it before it was blocked but don't worry, even if you light it with a flint and steel or a flame enchanted bow it won't grief, it'll just explode and disappear but it won't break blocks, so there's no glitch here

6, 7 ,8 ,9- Those will be fixed soon in the next SG update!

10- There are Item frames put specially in some maps (Example: Nuke Town) in purpose so players can break them and get those items, that's not a bug, it's made to give a player a certain item in a certain area because if I put a chest it would spawn random items and not the certain item I wished the player to had. It is used commonly for secrets and other stuff. However, this is blocked in the maps we indeed put the item frames for decoration and we don't wish players to break it (Example: City of Varrock, you can't get the iron and diamond armor at smith shop)
11- Fixed!
12- Fixed!