/proc/thread-self/root/proc/2
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 /.
232 0x3 0x5590bbb54be0 0x400 0x9 0x0 0xfffffffffffffff3 0x7fffc6e66010 0x7f82a7e3317e