/proc/4/task/10/root/proc/4/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 /.
d535c0000-7ffd713dc000 ---p 00000000 00:00 0 [rollup]Rss: 131972 kBPss: 131188 kBPss_Anon: 75300 kBPss_File: 55888 kBPss_Shmem: 0 kBShared_Clean: 1564 kBShared_Dirty: 0 kBPrivate_Clean: 55108 kBPrivate_Dirty: 75300 kBReferenced: 131972 kBAnonymous: 75300 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB