I found a very annoying bug and because of it I died in my minecraft Hardcore World :'(

So, I was fishing on my boat and I started to jump on it with my crouch hold and after a few jumps I died and the death message was that I fell from a high place it was hardcore so my world deleted and its annoying I checked it on my other world and it was the same bug then I jumped and crouched on a boat I got damaged and sometimes even killed by the first hit, can you please fix this issue.

Thanks,