FarmVille Multiple Nursery Barn Glitch

A new FarmVille glitch is allowing you to purchase more than one Nursery Barn. While the limit is still set to a maximum of one Nursery Barn per farm, farmers are able to purchase an additional Nursery Barn for 5,000 coins even if they already have an existing Nursery Barn on their farms. 
Says FarmVille Freak Farmer David,

"Tonight when I went to the market I found that I could purchase an additional nursery barn for $5000 coins. I figured it was a fluke and it wouldn't let me but sure enough it did. I now have 2 nursery barns on my farm. Attached are pictures of the market place showing the barn and a picture of it on my farm. Is this a glitch or can we now officially own more than 1 nursery."