right click on fence post with food not working

I had Cooked Steak in my hand. I right clicked when my cursor was on a fence (single fence post) and I expected to be eating it the Steak. What actually happened was the animation for hitting something or pressing a button/lever/opening a door.
1. Acquire food.
2. Go on Survival mode
3. Get hungry
4.Right click with food in hand on a fence post