This doesn't appear to affect hitboxes, but players (and zombies, etc) are just above 2 blocks tall visually in Bedrock Edition, as opposed to 1.85 blocks tall as in Java Edition.
These two screenshots were taken with the player facing the exact same direction. Notice the foreboding stature of Bedrock Edition 😉
Bedrock:
[media]Java:
[media]Linked issues
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Comments 3
What other mobs? Are you referring to MCPE-42631?
Fixed only for players in 1.13.0.9, other mobs are still too tall.