I have a number of films synced to my device, 5 of which are in a collection. If, on the Home Screen I select “All films”, then ‘Synced” the display correctly shows only films on the device, including one entry for the collection. If I then select the collection, all films are shown twice, I presume once for the library version, once for the synced version. Surely in the above situation it should only show the synced films.
Sorry, I was mistaken. The duplicates also appear if I browse the films page (not synced), it shows collection contents of both library and synced films, so the same as for synced only selection.
To summarise, when viewing the contents of a collection anywhere, it will show both films in the library and again if they are synced.