/proc/self/root/proc/self/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 /.
3462800000-7ffeeedda000 ---p 00000000 00:00 0 [rollup]Rss: 262768 kBPss: 262002 kBPss_Anon: 207460 kBPss_File: 54542 kBPss_Shmem: 0 kBShared_Clean: 1528 kBShared_Dirty: 0 kBPrivate_Clean: 53780 kBPrivate_Dirty: 207460 kBReferenced: 262768 kBAnonymous: 207460 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB