Non-cached box art option causes some box art to not show for certain game positions

[RocketRobz]

Console Configuration: Nintendo 3DS TWiLight Menu++ Version: 326924bc TWiLight Menu++ Theme: Nintendo DSi

Expected behaviour

Box art (regular or ?) should be shown.

Actual behaviour

Certain titles display the box art, while others don't display it.

Steps to reproduce

1. Open TWLMenu++ Settings.
2. Set Box art/Game cover to Non-cached.
3. Move to each title via the cursor.
4. See whether box art is shown or not.