If you are playing in Creative Mode and on Peaceful, hostile mobs will spawn in dungeons from the dungeon spawner. This has been happening since 0.10.x.
If you are playing in Creative Mode and on Peaceful, hostile mobs will spawn in dungeons from the dungeon spawner. This has been happening since 0.10.x.
Works As Intended. This was added as a feature in 0.9.1.