/proc/thread-self/root/proc/self/root/proc/thread-self/root/proc/12/task/13/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:cpu,cpuacct:/10:freezer:/9:memory:/8:perf_event:/7:cpuset:/6:hugetlb:/5:blkio:/4:devices:/3:net_cls,net_prio:/2:pids:/1:name=systemd:/