/proc/self/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 2 1 1cpu 3 38 1cpuacct 3 38 1blkio 10 35 1memory 11 51 1devices 4 35 1freezer 9 4 1net_cls 5 1 1perf_event 7 1 1net_prio 5 1 1hugetlb 6 1 1pids 8 35 1