/proc/thread-self/root/proc/4/task/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 7 1 1cpu 4 52 1cpuacct 4 52 1blkio 2 49 1memory 6 66 1devices 5 49 1freezer 3 4 1net_cls 10 1 1perf_event 9 1 1net_prio 10 1 1hugetlb 11 1 1pids 8 49 1