/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 /.
4 (node) S 2 2 0 0 -1 4194560 68917 0 750 0 3529 395 0 0 20 0 11 0 2411 1921052672 58209 18446744073709551615 94514622627840 94514666538933 140722886241152 0 0 0 0 16781312 17922 0 0 0 17 0 0 0 3 0 0 94514721992384 94514722861168 94515584688128 140722886243725 140722886243963 140722886243963 140722886246373 0