/proc/self/task/9/root/proc/5
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 /.
281 0x9 0x7f5739422b80 0x400 0xffffffff 0x0 0x8 0x7f5739421df0 0x7f5739677ec8