/proc/thread-self/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 /.
bcc7c0000-7ffd89df3000 ---p 00000000 00:00 0 [rollup]Rss: 271948 kBPss: 271104 kBPss_Anon: 215152 kBPss_File: 55952 kBPss_Shmem: 0 kBShared_Clean: 1684 kBShared_Dirty: 0 kBPrivate_Clean: 55112 kBPrivate_Dirty: 215152 kBReferenced: 271948 kBAnonymous: 215152 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB