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