/proc/self/task/10
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 /.
1afa3ec0000-7ffcb7d9b000 ---p 00000000 00:00 0 [rollup]Rss: 93816 kBPss: 93044 kBPss_Anon: 38948 kBPss_File: 54096 kBPss_Shmem: 0 kBShared_Clean: 1540 kBShared_Dirty: 0 kBPrivate_Clean: 53328 kBPrivate_Dirty: 38948 kBReferenced: 93816 kBAnonymous: 38948 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB