I was cooking at the kitchen in the pub in Cellsvich when I reached the experience needed to level up the skill. After clicking 'Level Up', the skill level changed to 2, but the button to level up did not go away. Thinking it was just a hiccup for the game, I exited the cooking menu and opened it back up. That was when my level was set at 2 and was maxed out. I have provided a picture for reference.
I have no talent points put into Cooking, if that makes a difference aside from the 1 rank up in skill.
You only get I think 6 points to allocate to things. 1 per 10 levels. at 44 you would have 4. Tool Creation is 1, Cooking is 1, Metal working is 2. There ya go buddy.