/proc/self/root/proc/thread-self/root/proc/self/task/20
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 /.
20 (libuv-worker) R 1 1 1 0 -1 4194624 121 0 0 0 1 3 0 0 20 0 11 0 354 1847078912 53455 18446744073709551615 7487488 50333345 140724184246720 0 0 0 0 16781312 17922 0 0 0 -1 0 0 0 0 0 0 108688912 108877056 135892992 140724184254293 140724184254502 140724184254502 140724184256487 0