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