WolframAlpha integration has a ton of issues, an the Kagi team just puts all of them into the mega thread and then completely forgets about them. I just checked several earliest reports in that thread and none of them have been fixed.
If you barely fix the issues with the WolframAlpha integration, please add an option to just disable it and use the old calc widget by default.
For example, when I search for currency conversions, I get an answer for WolframAlpha, which has incredibly inaccurate conversion rates, while the calc widget doesn't. This has been reported multiple times in the WA thread, but nothing has done about it. Disabling WolframAlpha would allow me to do this basic thing that every single search engine is able to do.