/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 /.
10 (MainThread) R 1 1 1 0 -1 4194560 50854 0 476 0 461 64 0 0 20 0 11 0 410 1849782272 51764 18446744073709551615 7589888 50333345 140729504537136 0 0 0 0 16781312 17922 0 0 0 17 0 0 0 0 0 0 109655528 109844416 491081728 140729504540392 140729504540601 140729504540601 140729504542695 0