GarageBand: Kotoeri character palette disabled after creating an effect preset

The Kotoeri Character palette becomes inactive after you create an effects preset in GarageBand.

On Japanese systems, this occurs in GarageBand versions 1 and 2. In GarageBand 3, the issue does not occur if you select "Use One Input Source in all documents." To do that:

1. From the Apple menu, choose System Preferences.
2. Select the International pane.
3. Click the Input Menu tab.
4. Select the radio button for "Use One Input Source in all documents."