Cold resistance Bugged

My cold resistance is bugged. I was wondering why I was dying so easily to cold damage because I knew I have good cold resistance on my gear. I checked on my resistance and it showed that I only have 48% cold resistance total which isn't correct. On my helm, I have 34% Cold res, Ring=21% cold Res, and armor is 33% cold res meaning that I should have 88% cold res instead of just 48%.

You lose 10% resistance per act you complete, so you will have -60% at the end of the campaign.