No it’s not only single movies, I have several folders, one for example containing all HEVC files (hundreds) and also within it several subfolders e.g for 4K files or for collections, all listed as individual movies e.g. a movie called HEVC. This happens in the server view not the Library view, and it’s the same in both the Apple TV and the iPhone, also the same in the beta.
You can see that in the JF client the movies start to be listed alphabetically with the numerical names first.
In the Infuse view, the names correspond to directories that hold collections, as well a directory for HEVC files. After the directories are all listed, the actual movie files start to be listed alphabetically.
The contents of the directories are not listed at all.