The bug
If you jump on a boat inside water for a while and then jump on the ground you will take fall damage depending on how long you were jumping.
How to reproduce
Place a boat in water near land
Hold down space on a boat for 3+ jumps
Jump from boat on land
→ ❌ You will take fall damage and can even die from it
See video
[media]Note
Does not happen if the boat in not inside water.
Related issues
is duplicated by
Attachments
Comments

Cannot reproduce. Can you attach some reproduction steps? It looks like you were trying to attach a video but you didn't provide the correct file.

Added reproduction steps and attached a video.
Can confirm. Added that only happens when boats are inside water.

+1. This also happened to my villager which was in boat and my friend started jump on it. The boat has teleported and villager just died.

Confirmed this is still an issue on 1.14.4 Pre-Release 3.

Confirmed for 1.14.4 too.
may be related to this: If you place boat in water, then jump on in once, then when you walk you will move stuttering. I added a video.

I experienced while fishing in a pool by boat, and the times needed to jumps is random, even get hurts if you just drop on the boat.

This bug just killed me in my hardcore world, jumping onto land is not nececary, just jumping for a while and then standin still on the boat also does it. Im really frustrated as this is not how you want to die in a hardcore world, spent hundreds of hours on.
Can confirm for 19w35a. And can confirm for what Teodor Arrhénborg has said: jumping onto land is not nececary, just jumping for a while and then standin still on the boat also does it.

Confirmed for 19w38a.

Confirmed for 19w45b

Please fix this, I travel a lot and this bug scares me!

Affects 1.15 Pre-3

I believe the fix for this bug has introduced MC-171969. That bug has debuted in 1.15 pre-release 5 and the fix for this bug may have caused that bug.