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