/proc/self/root/proc/4/root/proc/4/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 /.
7b0640000-7ffd1b59b000 ---p 00000000 00:00 0 [rollup]Rss: 270152 kBPss: 269366 kBPss_Anon: 213256 kBPss_File: 56110 kBPss_Shmem: 0 kBShared_Clean: 1568 kBShared_Dirty: 0 kBPrivate_Clean: 55328 kBPrivate_Dirty: 213256 kBReferenced: 270152 kBAnonymous: 213256 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB