Residual box art on skins without photo

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Flashcard or Exploits? Unlaunch
Base Console: DSi

TWiLight Menu++ Version: -5559afd
TWiLight Menu++ Theme: DSi theme MKDS skin, 3DS theme Vaporwave or default skin

Expected behaviour

Moving from a title with box art to one with smaller dimensions or no box art would clean up properly.

Actual behaviour

When larger box art stops displaying, the top 8 or so pixels max are leftover and only get replaced by other box art image data. This doesn't happen if using a photo in the skin.

Steps to reproduce

1. Choose a DSi/3DS skin without a photo
2. Look at a title with large box art
3. Look at a title with smaller box art or no box art

Box art used in the example: