global setting should have what I will always see in the next search (next browser session, next open browser window, ...). Changing its value affects all future queries.
search result page (accessing kagi.com and setting it there before the query is included here) should have what I expect to see in this search (this session). Changing its value affects this search only (or the one I am about to input in case of accessing kagi.com).
I have the same issue with the newly introduced region bangs. Cool feature, but they change things globally. They should change things for the current search only.