If a stack of 2 or more music discs are played in a jukebox, it will play normally and in survival mode one disc will be subtracted from the stack. However a duplicate stack will be ejected when the music is stopped or changed. The duplicate stack is not phantom and can be picked up. This process can be repeated indefinitely.
It occurs in singleplayer and multiplayer and both survival and creative modes.
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Comments 5
Stanimir, you can spawn the records in vanilla via commands, and even receive them from a command block, in stacked form.
Confirmed.