/proc/4/task/9/root/proc/4/task/8/root/proc
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 /.
#subsys_name hierarchy num_cgroups enabledcpuset 5 1 1cpu 4 36 1cpuacct 4 36 1blkio 2 33 1memory 11 53 1devices 3 33 1freezer 6 4 1net_cls 8 1 1perf_event 9 1 1net_prio 8 1 1hugetlb 10 1 1pids 7 33 1