Thought this bug was fixed, may have made its way back in? When you dismount a boat, it will spring back to where it was when you got in. If its out of render distance it won't come back. Saw a similar bug report but it was "resolved"so I'm making a new one. Stranded in a giant ocean
Thank you for your report!
We're actually already tracking this issue at MCPE-125388, so we will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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