/proc/self/root/proc/thread-self/root/proc/self
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
281 0xd 0x7ffc7b330ca0 0x400 0x36e 0x0 0x8 0x7ffc7b32ff20 0x7f01c2b23ec8