I have been playing on a tekkit server that has mobs disabled. Pre tekkit 3 mob spawners would still spawn mobs, so you could get the mob only drops and farm XP if you could find a dungeon/mineshaft. Since the server has upgraded to tekkit 3/minecraft 1.2.5, the mob spawners no longer work with mobs disabled.
My question is, was this behaviour a bug in the previous version that has now been fixed, or was it the intended behaviour and is now broken?
p.s. yes, the server is not set on peaceful, so that is not the issue. Also, it's not my decision to play with mobs disabled, so telling me to enable mobs won't help.