My favorite is when the top-voted, accepted answer looks correct, but misses various edge-cases. And then there's a second-most-voted answer which corrects the first.
Most questions about JavaScript are like that, for example, which was rather horrifying to realize. If you just leave a junior to their devices with that, they will absolutely copy all these correct-looking answers into your code base.
My favorite is when the top-voted, accepted answer looks correct, but misses various edge-cases. And then there's a second-most-voted answer which corrects the first.
Most questions about JavaScript are like that, for example, which was rather horrifying to realize. If you just leave a junior to their devices with that, they will absolutely copy all these correct-looking answers into your code base.