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