I want to add another user story:
I use Bittorrent Sync (btsync) / Resilio Sync (rslsync) now for a couple of years and look for a new solution, since Resilio removed the “nested folder” feature.
I end up at Syncthing to find out, that they have issues with hierarchical folder and access/share organization too.
Every time I share with Syncthing a new folder within another Syncthing folder (from a file system perspective) I get a kind of one time error or warning like “unexpected folder” (or something similar). And after an while I found a lot of dead files in the internal Syncthing folder.
That’s so confusing.