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