In the wikipedia widget, clicking on a link that leads to another wikipedia article is supposed to open that article. This fails for some links, instead nothing happens and 'yikes, no results...' is printed to the browser console.
An easy way to replicate this is to search for CET and click on the MEZ link in the wikipedia widget.
I did some rudimentary debugging and noticed that it's making a request to https://kagi.com/api/wikipedia?q=Mitteleurop%C3%A4ische%2520Zeit&locale=de with the space URL-encoded twice (so -> %20 -> %2520), which returns no results. Changing this to https://kagi.com/api/wikipedia?q=Mitteleurop%C3%A4ische%20Zeit&locale=de makes it return the expected article.
Clicking on an article link should open that article in the wikipedia widget.
Additionally, if the API request fails for whatever reason (yikes, no results...), it should probably just fall back to opening the article in a new tab instead of failing silently.