/proc/4/task/9/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 /.
15da240000-7ffebab9f000 ---p 00000000 00:00 0 [rollup]Rss: 172676 kBPss: 171900 kBPss_Anon: 115836 kBPss_File: 56064 kBPss_Shmem: 0 kBShared_Clean: 1548 kBShared_Dirty: 0 kBPrivate_Clean: 55292 kBPrivate_Dirty: 115836 kBReferenced: 172676 kBAnonymous: 115836 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB