Did you start a new round or a new game? There's a glitch that at the start of every new Forge game, anything set to "Spawn at start: NO" Will still spawn. Start a new round and it should be fine.
When you start a game all items will be there, even one's set to not spawn at start, but you have to start a new round.
When you start up forge, for the first round the object is there no matter what. Just start another round and it'll act normally.
omfg thank you so much everyone that said start new round thing, i never noticed that button on the start menu LOL thanks guys!:lol: