Position Kagi Maps in Toronto, Canada. Search for "Lee's Palace". This is a venerable Toronto concert venue. An entry for Lee's Palace comes up. Scroll down a bit…

Before showing relevant, useful information such as operating hours, a Wikipedia entry for "Joe's Palace", a 20-year-old TV show, is excerpted complete with lengthy infobox. "Joe's Palace" very obviously has nothing to do with Lee's Palace.
There is a "report an issue" box on the Kagi Maps entry for Lee's Palace. Normally I'd have just reported an issue there and be done with it. However, the report feature sends me to OpenStreetMaps, whereas the "attach a Wikipedia entry" function appears to be something Kagi Maps is doing itself and separately from OpenStreetMaps. In fact checking, OpenStreetMaps has a field for associated wikipedia entry and it links to the correct Lee's Palace entry, not Joe's Palace.

Looking through the history of this OSM entry, it has never been associated with "Joe's Palace".
Either one of the following would have fixed this issue:
A way to report issues with the "Kagi specific", non-OSM data displayed in Kagi Maps.
Whatever automated system associates Wikipedia entries with Kagi Maps entries should be overridden if the "wikipedia" field on the underlying OSM data is ever filled out.