/proc/4/task/5/root/proc/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 /.
385c00000-7ffde72e4000 ---p 00000000 00:00 0 [rollup]Rss: 110648 kBPss: 109946 kBPss_Anon: 54044 kBPss_File: 55902 kBPss_Shmem: 0 kBShared_Clean: 1400 kBShared_Dirty: 0 kBPrivate_Clean: 55204 kBPrivate_Dirty: 54044 kBReferenced: 110648 kBAnonymous: 54044 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB