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