*What I expected to happen was... *
When you shear a sheep, you steal it's wool from it's body. You get the wool, it doesn't have the wool it used to on it's body. Only small patches remain.
*What actually happened was... *
I got myself a shear and sheared the sheep. I got the wool but, the sheep didn't lose the wool from it's body at all. i.e the sheep was sheared but it still appeared to have wool on it's body. It went away soon as I resumed playing after I paused it. It is a troublesome bug as you cannot know which sheep you have sheared and which you haven't.
Steps to reproduce:
1. Find a sheep.
2. Get a shear.
3. Go to the sheep.
4. Shear the sheep.