A directory junction(on Windows10) is created in the Obsidian library, and can be identified in Obsidian after the junction is created.
However, after restarting Obsidian, the junction disappears in Obsidian.
Symlink has the same problem.
We don’t support symlinks/junktions yet. We are considering adding support for it in a future release. There is feature request for this.
It turns out that I think ‘disappear’ is a bug, but actually ‘appear’ is a bug. 