I was playing regular survival when I tried to get out of a boat into my house, and I jumped on the boat a few times and when I landed I took fall damage. It was like jumping on a slime block and jumping off.
What I expected to happen: No fall damage since it doesn't appear like I was gaining height while jumping.
What actually happened: I jumped off the boat and lost 2 and a half hearts with full iron armor, despite the platform I landed on being right next to me.
Steps to reproduce: (video here: https://vimeo.com/343721024
Put a boat in water
Build a platform right next to the boat made of a solid block (no water, slime blocks etc)
Jump on the boat a couple times
Jump off of the boat onto the platform, and fall damage should be taken
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[^MC-154974 Boats acting like a slime block - Jira.webloc]