Boat disappears when I beach it and jump out.

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We're tracking this issue in MCPE-125388, so this ticket is being resolved and linked as a duplicate.

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My boat still disappears as of Feb. 4, 2022. I've read through your information about this bug and can't figure out whether you're still working on it or think it's resolved - it isn't.  Thanks for your help.

This issue will be fixed when 1.18.10 launches. So neither, you just have to wait until the next update.