okay so I even got this issue in creative 1.0
what’s happening when a Nitro Barrel is placed inside a mutator zone and/or barrier it counts as having an object overlapping the spawn and does not respawn the barrel
the way to recreate this to place down a nitro barrel inside a hollow box barrier or a mutator zone, start the game and destroy the barrel, it will not respawn until the barrier or mutator zone is removed