/proc/self/root/proc/1/task/1
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 /.
5638dba49000-7ffec30b8000 ---p 00000000 00:00 0 [rollup]Rss: 2012 kBPss: 1069 kBPss_Dirty: 156 kBPss_Anon: 156 kBPss_File: 913 kBPss_Shmem: 0 kBShared_Clean: 1436 kBShared_Dirty: 0 kBPrivate_Clean: 420 kBPrivate_Dirty: 156 kBReferenced: 2012 kBAnonymous: 156 kBKSM: 0 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB