Jumping in water bug/glitch

This can be re-made very easily.

I was busy making a bath for my house, and made a 4x3 rectangle (see in picture), and added 2 water buckets to the left side which, consequently, made two sources and two flowing waters.(See in picture)

I walked up to the side of the water and found I jumped without pressing anything!
If you need to re-create it just follow the pictures.