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