/proc/4/task/5/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 /.
4 (node) S 2 2 0 0 -1 4194560 32865 0 750 0 251 49 0 0 20 0 11 0 3673 1792417792 27747 18446744073709551615 93984768786432 93984812697525 140734114242992 0 0 0 0 16781312 17922 0 0 0 17 1 0 0 4 0 0 93984868150976 93984869019760 93985851740160 140734114248128 140734114248366 140734114248366 140734114250725 0