With ( and ): https://en.wikipedia.org/wiki/President_(government_title) is detected as https://en.wikipedia.org/wiki/President_(government_title and breaks the URL.
Problem is that if we detect close brackets, then we'd have cases like: > See my personal website (http://example.com/about.html) and... If the ) was included, it would break the URL in the other way. URLs just suck. There's no good way to do this. The most common solution for autolinkers is to not include the close bracket. And as you can see, Wikipedia provides a "did you mean".