UPnP no cover for folder with subfolder(s)

here is how I organize a TV Show folder :

->Season 1

When I go through the TV Shows with SMB, each season’s folder and the TV Sow’s folder have the metadata (cover, synopsys).
But when I use UPnP, the folder of the TV Show doesn’t have any metadata.
I imagine it is due to the fact that the video files are not directly in the TV Show file but in the subfolder of his season.

is it just me?


I have a similar question about the lack of folder covers. Is this a limitation of DLNA, or is this a feature that could be added in the future?