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