I am on the most current version of bedrock. I was in a boat with a cow, while pulling a leashed cow in another boat behind me in 3rd person view. When I got to shore, I exited the boat I shared with the cow, and both the cow, and the boat vanished. When I went to break the second boat, it and the cow vanished. This was all done in 3rd person view, at night, approaching a well lit, jungle/bamboo, shoreline.