Index: sources/gui/qml/components/HeaderBarPopup.qml
===================================================================
diff -u -r56d6ed00b13ebfeba45c999e73d0198e702e1961 -r21f5ab716813d1cb4bc03b5f16cab708b489b9e6
--- sources/gui/qml/components/HeaderBarPopup.qml	(.../HeaderBarPopup.qml)	(revision 56d6ed00b13ebfeba45c999e73d0198e702e1961)
+++ sources/gui/qml/components/HeaderBarPopup.qml	(.../HeaderBarPopup.qml)	(revision 21f5ab716813d1cb4bc03b5f16cab708b489b9e6)
@@ -18,6 +18,11 @@
      * \param   vButton     - Headerbar icon button
      */
     function openDialog     ( vButton ) {
+        if ( visible ) {
+            close()
+            return
+        }
+
         button = vButton
         adjustPosition(button)
         open()