Spawner in Tample

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any (i tried in 1.12.2. cuz i was testin some mods that has nothing to do do with that)
So i just made a new world and it spawned me in oak biome next to the desert tample (not to far away) and when i went to explore it i saw some look down there, thought it was a glitch and went down there, and it appears to be broken chest, that is replaced with spawners chest, there was C418-13 laying on the ground, Note its the skeleton spawner, no i didnt place it my self