do not show second view option when not visible

python/code_editor_menu.py

@@ -15,7 +15,9 @@ def make_code_editor_menu(preferences_manager, mp_code_view_1, mp_code_view_2):
         mp_code_view_1.action_find_and_replace.setDisabled(
                    FindAndReplaceDialogWrapper.a_wrapper_instance_is_visible)
         mp_code_view_2.action_find_and_replace.setDisabled(
-                   FindAndReplaceDialogWrapper.a_wrapper_instance_is_visible)
+                   FindAndReplaceDialogWrapper.a_wrapper_instance_is_visible
+                   or not preferences_manager \
+                         .action_use_code_editor_split_screen.isChecked())
         
     menu = QMenu("&Code editor")
     line_mode_menu = QMenu("Line mode", menu)