SVN commit 1006089 by aseigo:

this probably makes it even clearer


 M  +3 -1      tasks.cpp  


--- trunk/KDE/kdebase/workspace/plasma/applets/tasks/tasks.cpp #1006088:1006089
@@ -402,8 +402,10 @@
     Q_UNUSED(status)
     QWidget *widget = qobject_cast<QWidget *>(sender());
 
-    if (widget->isVisible()) {
+    if (status && widget->isVisible()) {
         m_popupDialog = widget;
+    } else if (m_popupDialog == widget) {
+        m_popupDialog = 0;
     }
 }