Propagate tab-swictch events if there is only one tab

terminatorlib/terminal.py

@@ -885,6 +885,20 @@ def on_keypress(self, widget, event):
         # FIXME: Does keybindings really want to live in Terminator()?
         mapping = self.terminator.keybindings.lookup(event)
 
+        # Just propagate tab-swictch events if there is only one tab
+        if (
+                mapping and (
+                    mapping.startswith('switch_to_tab') or
+                    mapping in ('next_tab', 'prev_tab')
+                )
+        ):
+            window = self.get_toplevel()
+            child = window.get_children()[0]
+            if isinstance(child, Terminal):
+                # not a Notebook instance => a single tab is used
+                # .get_n_pages() can not be used
+                return(False)
+
         if mapping == "hide_window":
             return(False)