This is Bedrock and NOT Java
I was playing a multiplayer world with a friend of mine (not by realms or servers, by xbox live),
I wanted to ride a boat, and when I got out of it (from driving it), it turned completely invisible. I couldn't break it, see it, or get on it. My teammate, however, could see it.
I tried this in a world by my self, and it was still disappearing.
If I got out of a boat from driving it, I can't see it.
When my teammate drives the boat, he couldn't see it, but I could.
Related issues
Comments

Thank you for your report!
We're tracking this issue in MCPE-125388, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
-- I am a bot. This action was performed automatically! The ticket was resolved by one of our moderators, and I left this message to give more information to you.