When using Koqueror 4.8.5 and entering any search term in the search box, the suggestions list always appears in the top left corner of the window/tab.
This seems independent of skin, wiki, and logged in/out status. Screenshots show monobook when logged in to en.wikipedia and vector when logged out of de.wikisource
This does not happen in Firefox 22, which is the only other graphical browser I have access to. I don't know how long this has been the case as Firefox is my normal browser and I was only using Konqueror to test a visual editor-related bug.