/proc/self/task/4/root/proc/4
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 1080131 0 751 0 14481 3025 0 0 20 0 11 0 2371 1944190976 65987 18446744073709551615 94571696619520 94571740530613 140730750292816 0 0 0 0 16781312 17922 0 0 0 17 0 0 0 4 0 0 94571795984064 94571796852848 94572556558336 140730750297536 140730750297774 140730750297774 140730750300133 0