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