/proc/self/task/4
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 /.
c11380000-7ffd6cbfb000 ---p 00000000 00:00 0 [rollup]Rss: 996960 kBPss: 996170 kBPss_Anon: 941548 kBPss_File: 54622 kBPss_Shmem: 0 kBShared_Clean: 1576 kBShared_Dirty: 0 kBPrivate_Clean: 53836 kBPrivate_Dirty: 941548 kBReferenced: 996960 kBAnonymous: 941548 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB