/proc/self/root/proc/4/root/proc/self/root/proc/2/root/proc/2
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 /.
11:blkio:/10:pids:/9:devices:/8:freezer:/7:perf_event:/6:cpuset:/5:memory:/4:hugetlb:/3:net_cls,net_prio:/2:cpu,cpuacct:/1:name=systemd:/