/proc/thread-self/root/proc/self/root/proc/self/task/13/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 /.
00400000-7ffe9c1b7000 ---p 00000000 00:00 0 [rollup]Rss: 238352 kBPss: 237211 kBPss_Anon: 185788 kBPss_File: 51423 kBPss_Shmem: 0 kBShared_Clean: 1816 kBShared_Dirty: 0 kBPrivate_Clean: 50748 kBPrivate_Dirty: 185788 kBReferenced: 238352 kBAnonymous: 185788 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB