/proc/4/root/proc/4/task/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 /.
383fac0000-7ffce2ac5000 ---p 00000000 00:00 0 [rollup]Rss: 239876 kBPss: 239074 kBPss_Anon: 183112 kBPss_File: 55962 kBPss_Shmem: 0 kBShared_Clean: 1600 kBShared_Dirty: 0 kBPrivate_Clean: 55164 kBPrivate_Dirty: 183112 kBReferenced: 239876 kBAnonymous: 183112 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB