Reproduced in 18w45a, but not in future versions. Appears to be resolved.
Reproduced on 18w47b. Seed was -7323967156008797096, on a Redstone Ready world.
Reproduced in 18w47b and 18w44a. Seed I used is -7323967156008797096, on a Redstone Ready world.
suitsandtux
Reproduced in 18w45a, but not in future versions. Appears to be resolved.