We can swim... Out of water

Hello,

I want test the swim position, and I want to test bug glitch, :

• 1 - Swim in the water

• 2 - Break 1 block and do a tunnel

• 3 - The water no follow you, and you can stay in swim position and break block for do a 1 block tunnel and if you continue break block, you can, at time, see behind block