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