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