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