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