When I use a barrel, it shows villager affects.

I was collecting berries and put some in a barrel. Suddenly there was a villager effect above the barrel, and I broke blocks under it and found no villagers. I was able to repeat this several times as shown in a clips I recorded. As you can see, I cannot figure out how or why this was happening. This took place on my survival world that has no addons or texture packs of any sorts.