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