I can also confirm this is a problem on 1.11.2, world seed -935057631223221916, witch hut nominally at -864,71,1024, NBTExplorer confirmed that the spawning area was at 64 instead of elevated.
Fixing the spawner to match the apparent caused witches to spawn as expected.
A. B.
I can also confirm this is a problem on 1.11.2, world seed -935057631223221916, witch hut nominally at -864,71,1024, NBTExplorer confirmed that the spawning area was at 64 instead of elevated.
Fixing the spawner to match the apparent caused witches to spawn as expected.