This also happened to me. My survival world has been several years in the making. It's quite grand.
My skeleton spawner just stopped spawning skeletons. For awhile the skeleton model inside the block had turned into a pig model. After a couple of months I tried converting my farm to a pig farm but then the little model in the block disappeared all together.
Since then I've waited a couple of more months and figured I'd go hunting for a new spawner. I ended up finding a new skeleton spawner but after a day it too stopped working, no model in the block.
Found another skeleton spawner, same deal, after a day it stopped spawning and lost its model.
Found a zombie spawner, same deal, after a couple of days it stopped spawning and lost its model.
I appreciate that sometimes it's hard to find and fix bugs but from my point of view this one has been in the game for months and months now and appears to have broken all mob spawners for all long time players of the game.
I've tried switching difficulties to peaceful and back to hard. No help. I cannot switch to Creative mode as this world has been created entirely in Survival and I don't want to lose that prestige.
James B McGill
This also happened to me. My survival world has been several years in the making. It's quite grand.
My skeleton spawner just stopped spawning skeletons. For awhile the skeleton model inside the block had turned into a pig model. After a couple of months I tried converting my farm to a pig farm but then the little model in the block disappeared all together.
Since then I've waited a couple of more months and figured I'd go hunting for a new spawner. I ended up finding a new skeleton spawner but after a day it too stopped working, no model in the block.
Found another skeleton spawner, same deal, after a day it stopped spawning and lost its model.
Found a zombie spawner, same deal, after a couple of days it stopped spawning and lost its model.
I appreciate that sometimes it's hard to find and fix bugs but from my point of view this one has been in the game for months and months now and appears to have broken all mob spawners for all long time players of the game.
I've tried switching difficulties to peaceful and back to hard. No help. I cannot switch to Creative mode as this world has been created entirely in Survival and I don't want to lose that prestige.