/proc/self/root/proc/self/root/proc/4/task/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 0x7f78f0113b80 0x400 0xffffffff 0x0 0x8 0x7f78f0112df0 0x7f78f0368ec8