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