I don't know whether it is a bug, or just an expected behavior; a lot of time I have observed that on the main page, where all the latest questions are listed, some information about the question is also shown, e.g. the number of answers, and the number of views.
Now I have observed that almost all the time the number of answers shown on the main page is different than the actual number of answers posted for that question (which I am able to see after clicking on that question). For all the questions, the number of answers displayed is zero, where actually that question would have 2 or 3 or 4 answers.
So users sometimes try to find the unanswered questions from the main page itself, but they then notice the question already have more than 1 answer.
Why is it so?