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