Temporary Spawners模组对刷怪笼的刷怪数量进行了限制。

当刷怪数量达到一定值（默认为50），刷怪笼会自动被破坏（直接消失）

加入此模组后，刷怪笼不再能像原版那样源源不断地刷出怪物了
刷怪最大值可在修改.minecraft/config/temporary_spawners-common 中修改

Does just 1 thing, destroys spawner block after x amount of mob spawns.
Primary use is not allowing rpg mopacks to be easily cheesed by automatically farming mob spawners for loot.
I didn't test with mod spawners, but i add it to every block that has tile entity instanceof MobSpawnerTileEntity.