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