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