Queries containing term so are sent to StackOverflow

Query: so many topics so little time
The term <<so>> directs the query to Stack overflow.

Kagi.com would do a normal search on all terms Query: so many topics so little time

And searching Stack overflow would require !so

Do you have so set as a quick bang in your settings?

nobodywasishere No, I don't have custom bangs or even a ! In my query

Not a custom bang, but a quick bang:

It allows you to use a bang without having a ! in your query

Yes, !n

Is this a consistent behaviour? Does this link redirect you to stack overflow?

The problem has resolved! See image!