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