There has never been a guarantee for a map to be absolutely precise and correct. Just because maps today are digital and get updated automatically - or are even something like "live" - does not mean that there can't be any inaccuracies.

And that's the reason one never relies on a map alone, but uses it as a guide.

I've seen road signs that were simply wrong. Always use a combination of informational input and always be aware of possible flaws.