Boats from 1.19 cannot be entered in 1.20. If it was a boat with chest, the chest interface would appear, if it weren't, nothing would change. It is the same effect from shift-clicking the boat. To fix this, you can just replace all the boats on the map, but sometimes this can be bad if there arte too many boats on a realm or old world
In the video, the first boat was replaced before the recording and the second one was the last 1.19 boat from the server.
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We're tracking this issue in MCPE-169772, so this ticket is being resolved and linked as a duplicate.
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