If a file has multiple conflicting licenses (such as a licensed piece of art), the gallery may display only th eleast restrictive licnse, no matter if that license is applied only to the object 8artwork) or the digital reproduction. Sometimes an artist may relase their artwork under a license, but a photographer of that artwok can claim copyright of the photo (WMF has some opinions about faithful reproductions of 2D-works, but assuming that does not apply, such as with artworks with frames, or 3d objects such as the example below), this causes the app to not dispaly correct license information.
https://commons.wikimedia.org/wiki/File:Lincoln_statue.jpg on https://en.wikipedia.org/wiki/Talk:Fasces
| {F5362651} | {F5362652}
| Displays only a Public Domain mark | Displays that the object (statue) is PD, but the image is cc-by-sa 3.0 / GFDL)
We could map common "license templates" such as {{Licensed-PD-Art}} or {{Licensed-PD}} in order to draw some metadata from them somehow, on how licenses are applied, until #structured-multimedia-data is a thing.
(As a sub-thing, we should also provde more licenses than one if multi-licensed)