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