/proc/thread-self/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 6 1 1cpu 5 40 1cpuacct 5 40 1blkio 7 37 1memory 11 53 1devices 10 37 1freezer 9 4 1net_cls 3 1 1perf_event 4 1 1net_prio 3 1 1hugetlb 2 1 1pids 8 37 1