Bamks

I have this same issue as well. I just hopped out of my boat after it rammed into a corner of a sand block and when I got out the boat became invisible and I got stuck on it. The "collision" was there but it was pretty glitchy. I tried to take a video but I was only able to capture it for a few seconds. The glitch had lasted longer before recording but the boat probably glitched away. Here is the video