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