/proc/2/root/proc/4/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 3 1 1cpu 4 36 1cpuacct 4 36 1blkio 7 33 1memory 2 48 1devices 10 33 1freezer 8 4 1net_cls 5 1 1perf_event 11 1 1net_prio 5 1 1hugetlb 6 1 1pids 9 33 1