Commandblocks, fire and blocks destroyed from the Wither have weird purple and black textures

Put the summary of the bug you're having here

So i walked into a fire accidentaly
I were expecting to catch fire with a regular fire animation

The fire had this texture instead: http://gyazo.com/fb265d2cff3abcc94938e46209e7d4a9
I caught fire on a purple/black animation ;-;

Steps to Reproduce:
1. Walk into a fire
2. Done