Summary:
Moss blocks cannot spread to mud blocks, unlike in Java Edition.

Steps to Reproduce:

1. Place a moss block and mud block next to each other
2. Bone meal the moss block

Observed Results:
The moss block doesn't spread to the mud block.

Expected Results:
The moss block should spread to the mud block.

Videos:
Bedrock:
Minecraft Preview 2022-11-20 12-38-35.mp4

Java:
Minecraft 1.19.2 - Singleplayer 2022-11-20 11-23-39.mp4