/proc/thread-self/root/proc/thread-self/root/proc/12/task/15
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 /.
00400000-7fff471fc000 ---p 00000000 00:00 0 [rollup]Rss: 123952 kBPss: 122820 kBPss_Anon: 71404 kBPss_File: 51416 kBPss_Shmem: 0 kBShared_Clean: 1776 kBShared_Dirty: 0 kBPrivate_Clean: 50772 kBPrivate_Dirty: 71404 kBReferenced: 123952 kBAnonymous: 71404 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB