Minecraft Username: Cike25 Brief Description: Newly placed spawners are borked. Spawners placed before 1.21.6 upgrade still work. Instructions: 1. Place a spawner in an adequate spawning location How many times did you recreate this?: Many times, with old spawners, new spawners, picked up spawners, etc. Tested placing with 1.20.1, 1.21.6, and 1.21.7 clients. Result: The placed spawner does not have the miniature inside and it do not "activate" to spawn mobs. Expected Result: Placed spawners has the appropriate miniature inside and spawns mobs. Evidence: As shown in the 3rd screenshot, there seems to be some data missing from the newly placed spawners. Log block does not indicate the spawner type.