[MC-153717] lilypads won´t spawn on swamp biomes

lilypads won´t spawn on swamp biomes

What I expected to happen was...:
To find lilypads in swamp biomes

What actually happened was...:
there was none lilypads in swamp biomes, and I checked out A LOT of swamps

Steps to Reproduce:
1. no lilypads
2. no lilypads spawning in swamps
3. empty swamps

Linked issues

Please do not mark unreleased versions as affected.
You don't have access to them yet.

1.14.3-pre1 is already released, I just checked if the bug was still there.

Could you add world seed (/seed) and coordinates to your report?

seed: 1956111413
x:-585
z: 943

Thanks. Added this information to MC-132787 which is duplicated by this issue.