Hello my friends, this is a bug on blender? how i can fix? somebody can help me?

IMAGES AT GYAZO.COM

http://gyazo.com/f591824d3f4a126080648ee6379ac36f

http://gyazo.com/b976646921fa191adba47e633cd1e930

http://gyazo.com/79326879074483d8a91d9a05eb814931

http://gyazo.com/43658c52f626b38b98062a6f14d04d9b

the gyazo are rendered at unity engine free, but inside the blender, still the same thing.