I think you can change the number of histories based on the number of views in the recent search.
Value cannot be 0.
Is there a way not to leave a search history for privacy reasons?
Verify that it has been updated to EmEditor v20.5.912 or later, then select Customization from the Tools menu, then select the History page, and then Clear History at Exit. Check the check box, select the history you want to clear, and click OK.