Estuary: media source portrait folder.jpg does not fit

Running estuary on latest libreelec (7.95.1). For pictures I have set a folder location on my NAS which has a portrait folder.jpg.

Does not seem to fit the interface background. I think square art is expected.

[Image: 5D3752C7-EAE5-4947-957C-42986B9511D8_zpsb5qj1f7r.jpg]

Sent from my iPhone (typie typie)