/proc/thread-self/root/proc/self/root/proc/2/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 5 1 1cpu 4 59 1cpuacct 4 59 1blkio 8 56 1memory 7 72 1devices 10 56 1freezer 11 4 1net_cls 2 1 1perf_event 6 1 1net_prio 2 1 1hugetlb 9 1 1pids 3 56 1