/proc/2
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 /.
2 (bootstrap) S 0 2 0 0 -1 4194560 778 0 79 0 10 15 0 0 20 0 22 0 4009 1058836480 1249 18446744073709551615 94080394141904 94080395464688 140723012101728 0 0 0 0 4096 83008 0 0 0 17 1 0 0 0 0 0 94080395506072 94080395508784 94080542334976 140723012108982 140723012109201 140723012109201 140723012112356 0