/proc/2/root/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 /.
3901000000-7ffdf07cb000 ---p 00000000 00:00 0 [rollup]Rss: 162052 kBPss: 161288 kBPss_Anon: 105296 kBPss_File: 55992 kBPss_Shmem: 0 kBShared_Clean: 1524 kBShared_Dirty: 0 kBPrivate_Clean: 55232 kBPrivate_Dirty: 105296 kBReferenced: 162052 kBAnonymous: 105296 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB