/proc/4/task/5/root/proc/self
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 /.
a61340000-7ffdbd745000 ---p 00000000 00:00 0 [rollup]Rss: 271764 kBPss: 270964 kBPss_Anon: 214992 kBPss_File: 55972 kBPss_Shmem: 0 kBShared_Clean: 1596 kBShared_Dirty: 0 kBPrivate_Clean: 55176 kBPrivate_Dirty: 214992 kBReferenced: 271764 kBAnonymous: 214992 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB