@godsdead here is the link (at bottom of this) to the video I made about it. Please watch the entire thing as I was writing notes for the viewer in the chat box and then deleting it because I was not using a microphone.

Things to look for:

• My Ping: I ran the in-game command and it showed 22 ms, which is very good
• I sailed for probably several hundred blocks before using /home
• The first time (after sailing in the boat) I did “/home a” I died of fall damage, but the second time (when there were no boats involved) I survived, taking no damage at all
• I did NOT test if this occurs without moving several hundred blocks first
• I did NOT test if this occurs on entities other than boats, such as horses

If you need any further details, please let me know.

https://drive.google.com/file/d/1dqHxlnfOvAkGyCU3NW2L0aFwniGprKDV/view?usp=sharing