/proc/4/task/4
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 0xd 0x7ffefc33adc0 0x400 0x264 0x0 0x8 0x7ffefc33a030 0x7f613ff47ec8