/proc/4/task/10/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 /.
88cbc0000-7fffae5fb000 ---p 00000000 00:00 0 [rollup]Rss: 214828 kBPss: 214076 kBPss_Anon: 158032 kBPss_File: 56044 kBPss_Shmem: 0 kBShared_Clean: 1500 kBShared_Dirty: 0 kBPrivate_Clean: 55296 kBPrivate_Dirty: 158032 kBReferenced: 214828 kBAnonymous: 158032 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB