/proc/thread-self/root/proc/thread-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 /.
202 0x556941dce608 0x189 0x1b69a 0x0 0x0 0xffffffff 0x7f62c17edb40 0x7f630119937a