/proc/4/root/proc/self/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 0x7ffdc5a58ab0 0x400 0xb5 0x0 0x8 0x7ffdc5a57d30 0x7f75666d3ec8