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