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