/proc/2/root/proc/self/root/proc/thread-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 /.
309f80000-7fff11009000 ---p 00000000 00:00 0 [rollup]Rss: 630328 kBPss: 629548 kBPss_Anon: 574928 kBPss_File: 54620 kBPss_Shmem: 0 kBShared_Clean: 1556 kBShared_Dirty: 0 kBPrivate_Clean: 53844 kBPrivate_Dirty: 574928 kBReferenced: 630328 kBAnonymous: 574928 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB