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