When an application has one active module and that module has a link type of Separator, attempting to expand other separators in the navigation pane causes a JavaScript error ("Uncaught TypeError: Cannot read property 'length' of null.") and all other separators in the navigation pane fail to expand.

1. Create a new sys_app_application record named Test App.

2. Create only one sys_app_module under the Test App application of type Separator.

3. In the application navigator, click any other separator in other applications. Observe the separators in all applications are not functional.

Ensure that there is always another module type (for example, List of Records) accompanying the Separator module in any given application.