/proc/self/task/4/root/proc/4/task/7/root/proc/2/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 /.
b63c40000-7ffd94b99000 ---p 00000000 00:00 0 [rollup]Rss: 1156952 kBPss: 1156164 kBPss_Anon: 1100124 kBPss_File: 56040 kBPss_Shmem: 0 kBShared_Clean: 1572 kBShared_Dirty: 0 kBPrivate_Clean: 55256 kBPrivate_Dirty: 1100124 kBReferenced: 1156952 kBAnonymous: 1100124 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB