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