Workaround until this is fixed: summon a baby villager, then convert it into a zombie.
/summon villager ~ ~ ~ ~ ~ minecraft:entity_born
/event entity @e[type=villager] become_zombie
The achievement description is wrong. Ward and Vex don't move the tracker. It's Eye and Raiser you need. My achievement was stuck at 6/8 until I used these two.
Issue is not exclusive to creative mode. It also occurs in survival and adventure mode, if the block being pickblocked is in the player's inventory. This could break custom maps.
Issue also occurs in the reverse case. When two bottom slabs are stacked on top of one another, attempting to turn the upper one into a double slab results in the lower slab being converted instead.
Place 2 bottom slabs, one above the other.
Attempt to place a slab on the upper slab to create a double slab block.
The lower slab becomes a double slab block.
The upper slab should become a double slab block.
I’ve just checked, and this behavior still exists on Bedrock. It also works as I would expect on Java Edition, making this a parity issue. I don’t understand why this was resolved as “Works As Intended.”
It’s a minor issue I found when a wandering trader was unexpectedly opening a sculk-activated piston door I made, but is unintuitive and does not appear intended to me. Could this resolution be double-checked?