Not able to remove people from friend's list

Ever since the last few patches, I haven't been able to remove people from my friends list. I will click on the option but nothing will happen, I restart the client only to find the same thing happens. It has gotten much worse since the last patch, to the point where many functions of the client don't work besides just removing people from friends list. I've seen many other complaints about this so I know i cant be the only one.