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