/proc/4/task/10/root/proc/thread-self/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 6 1 1cpu 10 59 1cpuacct 10 59 1blkio 9 56 1memory 7 74 1devices 2 56 1freezer 3 4 1net_cls 8 1 1perf_event 4 1 1net_prio 8 1 1hugetlb 11 1 1pids 5 56 1