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