They were wrong, factually incorrect. That is not lying. Lying implies intent to deceive. Speaking factually incorrect things if you believe them to be true is honest but incorrect.
Do you shame your kids by calling them liars every time the get something wrong on their homework? Do schools kick you out for violating the code of conduct (which usually includes some language about honesty with faculty and administration) every time you get marks off on a test because of factual incorrectness?
Are people who write code with bugs just dirty liars, because the documentation says it will do this, but a bug means that in some cases it fails?
Do you shame your kids by calling them liars every time the get something wrong on their homework? Do schools kick you out for violating the code of conduct (which usually includes some language about honesty with faculty and administration) every time you get marks off on a test because of factual incorrectness?
Are people who write code with bugs just dirty liars, because the documentation says it will do this, but a bug means that in some cases it fails?