In Minecraft windows 10, If you paddle a boat and open your inventory, the boat still moves.

Normally, you can't move a boat when in the inventory. Also, when you let go of "W", the boat stops. If you hold "W" while in a boat and press "E" and access the inventory, you can let go of "W" and the boat will still move.

If attached video doesn't work, It's on YouTube https://youtu.be/pO0ihziy8nM