Bug on chatGPT it has to improve

i find out bug on chatGPT when i am asking to ChatGpt as 6+17=? then a i get answer by chatGPT 23 it’s right but when i wright 22 to make sure how it react of that he reply i am My apologies, you are correct. The answer is 6+17=22 . chatGPT it is good too but ,chatGPT should be improve .