Ocean Monument Missing in latest snapshot

On Seed "7373154853371715964" in all previous snapshots and previous stable versions, an ocean monument spawns pretty close to world spawn.

On the latest snapshot the ocean monument is missing entirely.

Using a world generated in 15w45a, and loading in 15w46a keeps the temple there, which is nice, but I would hope to generate this world for my server in 1.9 and have the monument still there.

tl;dr - Has the temple placement/generation changed?

Attached 3 files;
15w45a.jpg - new generation of seed, temple at expected location.
15w46a - loaded from 15w45a world.jpg - shows temple as expected.
15w46a - new world generation.jpg - shows no temple at all, using the same seed.