This is the result of a sloppy and lazy programming . Obsidian have a serious issue with quality of their games and after all those years they should realize the main issue and fix it. You can have most beautiful graphics, amazing story, millions of quests and billions of races, but when you can't get something as basic as characters stats right, it worth nothing. And its a shame too .
Their half assed responses and attempts to downplay this bug are outrageous. I can live with a few broken quests , obscure and non intuitive game mechanics , bugged spells , retarded loading times between locations and so on, but this one is unacceptable.