When leaving a boat, holding w and left shift will create the character's arm to not appear, and not allow the player to right click any interactable items, such as the boat again or a chest.

Another weird thing that I found is that when you are breaking blocks while in this state, as you pass the half broken <?> the game will keep the blockstate at that level and will allow you to move around and continue breaking it, if you haven't begun breaking a different block