While using a boat to travel through ice tunnels in the nether after any contact with the nether portal if i unmount it it becomes invisible, and im unable to break it, so i end up suspended in the air, and i have to disconnect and reconest to be able to break it.

I am playing minecraft on a private server with the allow flight option set to true.

Steps to Reproduce:
1. Mount a boat
2. Travel in and out of the nether portal
3. Unmount the boat