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