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