/proc/self/root/proc/thread-self/root/proc
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 /.
CPU0 CPU1 HI: 0 0 TIMER: 97297 112500 NET_TX: 1 4 NET_RX: 1109631 1177550 BLOCK: 214 501961 IRQ_POLL: 0 0 TASKLET: 279 19337 SCHED: 260904 249981 HRTIMER: 0 0 RCU: 127237 125953