So if I enter a search query in the top-right search box (and anther one and so on) and I select "Erase history" by using the pulldown... dopus 13.0.40 keeps the latest search active in memory. That is, if you close down dopus and relaunch it, it will show the latest search query in the topright corner.
It only clears the history of previous searches. The current search is a property of the Search Results folder you’re still in at that point. You’d need to close the window or tab to purge that as well.