The blazes randomly gives you Absorption IV for infinite time, won`t charge their fireballs near you, even in hard difficulty!
And finally, the bug that make me angry is that, randomly kills you from one hit and all your armor and in-hands tools, are instantly broken.

NOO!!! I lose my full Protection III and Unbreaking III diamond armor and my precious Sharpnees III, Fire I, Looting II diamond sword.