/proc/thread-self/root/proc/thread-self/root/proc/self/task/17/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 /.
00400000-7ffea35d4000 ---p 00000000 00:00 0 [rollup]Rss: 223776 kBPss: 222605 kBPss_Anon: 171216 kBPss_File: 51389 kBPss_Shmem: 0 kBShared_Clean: 1840 kBShared_Dirty: 0 kBPrivate_Clean: 50720 kBPrivate_Dirty: 171216 kBReferenced: 223776 kBAnonymous: 171216 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB