Ender Crystal entity spawning 1 block too low

The entire Ender Crystal entity is spawning 1 block too low. Also, the bedrock it would normally sit on/wrap around is failing to spawn from trying to do the same, but since there's obsidian instead of air, it can't spawn. (These 2 errors may or may not be related)

What was expected to happen was:
Each Ender Crystal entity should have spawned on top of a bedrock block at the top of each obsidian pillar within the End.

What actually happened was:
Each Ender Crystal entity spawned where the bedrock block should normally have been. The bedrock block is nowhere to be found.

Steps to Reproduce:
1. Generate new world.
2. Locate the End Portal, activate it, and go into it.
3. Go up to any/all Ender Crystals. (Take note of the obvious displacement)