/proc/4/task/4/root/proc/thread-self/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 7 1 1cpu 9 59 1cpuacct 9 59 1blkio 3 56 1memory 8 71 1devices 6 56 1freezer 2 4 1net_cls 5 1 1perf_event 11 1 1net_prio 5 1 1hugetlb 4 1 1pids 10 56 1