Version Information

• WordPress: 4.4.3
• MultilingualPress: 2.4.0

Steps to Reproduce

1. Open Apperance/Menus
2. Click "Add to Menu"
3. Nothing happens

What I Expected

a language menu item being added.

What Happened Instead

Nothing

When I define('SCRIPT_DEBUG', true); it works. Also Firefox Developer Toolbar confirms there are no listeners attached without SCRIPT_DEBUG. Unfortunately debugging in the minified file (without source maps) is hard so I have no clue where the issue lies for now.