This is perhaps not a real bug in that it may be intentional but it seems unnecessary to me and it does interrupt one a little.
When I create a new construct search tab, I often want to move it to a new pane so that I can drag a search from another search tab into this one and then modify it. When I move the tab to a new zone I get this error :
linkDialog.jpg 33.91KB 0 downloads
I'm guessing this is a consequence of Acc trying to execute the search when it's moved. But at this point there is no search in it so the message is not necessary in any event.