Thanks for reporting the issue, the issue will be fixed in the next release.
A short term fix would be to edit
~/.local/share/ov/pkg/prod-isaac-sim-4.2.0/exts/omni.isaac.app.setup/omni/isaac/app/setup/extension.py
Add the following on line 428
editor_menu.set_hotkey(menu_path, carb.input.KEYBOARD_MODIFIER_FLAG_CONTROL, key)