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