Short Grass and Tall Grass Generation in Plains/Savannahs

^{Update by [Mojang] Mega_Spud (Jay Wells):}
Summary:
Grass (short and tall) generation in Plains biomes is a lot less than in previous versions and in the Java version.

Steps to Reproduce:

1. Start a new world (Seed example 1739530041)
2. Travel to the plains biome (example: /tp 386 64 -22)

Observed Results:
There is not much grass and tall grass in the plains.

Expected Results:
In previous and other versions, plains have a lot of grass and tall grass.

Screenshots/Videos attached: Yes

Notes:

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Original Description:
There seems to be a lot less patches of short grass (Plains), and there's more tall grass (Savannah).

Previously, both biomes had a lot more short grass.