Yes, there was a recent change, and there's another change coming (pull request: https://github.com/adobe/brackets/pull/3101). The following is correct:

```
    var _prefs = PreferencesManager.getPreferenceStorage(PREFERENCES_CLIENT_ID);
```

The default prefs get set 2 lines later:

```
    PreferencesManager.handleClientIdChange(_prefs, "com.adobe.brackets.Editor", defaultPrefs);
```