/proc/2/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 8 1 1cpu 2 36 1cpuacct 2 36 1blkio 7 33 1memory 11 49 1devices 3 33 1freezer 9 4 1net_cls 5 1 1perf_event 4 1 1net_prio 5 1 1hugetlb 10 1 1pids 6 33 1