I have a lot of problems with cats lately. When I tried to tame one, he got the hearts, which should mean he follows me. But he is still untamed. Tried this a lot of times, but it still didn't work. Then, after getting an spawn egg(I could tame him then), the cat only tries to sit on my lectern (more then one cat) and even with uncooked fish he is not coming off. When giving him the fish, he gets hearts, but is not mating with the other cat who got hearts too, because they are only trying to get on the lectern. When I let them stand and walk away more than the amount needed for them to teleport, nothing happens too. They try to sit on the lectern or they stay on the lectern. So now I have cats on my lectern or right next to it that I cannot use at all.. 

no problems with any other mobs, just the cats.