What is the issue? - When I placed a zombie spawner it says it is an "Invalid spawner" and change it to a pig spawner (default spawner) How do you "do" the glitch/bug? - Placing a zombie spawner What happens when you "do" this glitch/bug? - It changes the spawner to a pig spawner without there being a away to change it back Anything else you want to add? - You can check what spawner I placed with Co I believe if you don't believe I placed a zombie spawner.