Trivial one line to stop <mod>+double-click from rebalancing the splitters

terminatorlib/titlebar.py

@@ -225,6 +225,7 @@ class Titlebar(gtk.EventBox):
         self.show()
         self.label.show()
         self.emit('clicked')
+        return True
 
     def on_edit_done(self, widget):
         """Re-emit an edit-done signal from an EditableLabel"""