Also confirmed for 14w26b. New world created in 14w21b. No mods. When I clear abandoned mines and dungeons, I always leave spawners in place (with the typical surrounding torches on the spawner and walls. Anything after 14w21b, monsters spawn in the walls or in nearby hallway if right next door. Just tested again with 14w26b. Might be my imagination, but they only spawn in walls now - never in adjacent open areas as the previous 2 snapshots.
GrafaEndalaust
Also confirmed for 14w26b. New world created in 14w21b. No mods. When I clear abandoned mines and dungeons, I always leave spawners in place (with the typical surrounding torches on the spawner and walls. Anything after 14w21b, monsters spawn in the walls or in nearby hallway if right next door. Just tested again with 14w26b. Might be my imagination, but they only spawn in walls now - never in adjacent open areas as the previous 2 snapshots.