/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: 123237 103954 NET_TX: 0 1 NET_RX: 1305224 1327429 BLOCK: 158 2729 IRQ_POLL: 0 0 TASKLET: 550 24127 SCHED: 244167 234553 HRTIMER: 0 0 RCU: 141919 139639