Removed visibility workaround

Signed-off-by: Dominique Fuchs <32204802+DominiqueFuchs@users.noreply.github.com>

src/gui/tray/Window.qml

@@ -62,7 +62,6 @@ Window {
             trayWindow.setY( systrayBackend.calcTrayWindowY());
             systrayBackend.setOpened();
             userModelBackend.fetchCurrentActivityModel();
-            activityListView.visible = (activityListView.model.rowCount() > 0)
         }
         onHideWindow: {
             trayWindow.hide();
@@ -501,8 +500,6 @@ Window {
 
             model: activityModel
 
-            visible: (model.rowCount() > 0)
-
             delegate: RowLayout {
                 id: activityItem
                 width: activityListView.width