/proc/thread-self/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 /.
6d8f700000-7fff325b7000 ---p 00000000 00:00 0 [rollup]Rss: 112688 kBPss: 111952 kBPss_Anon: 57204 kBPss_File: 54748 kBPss_Shmem: 0 kBShared_Clean: 1468 kBShared_Dirty: 0 kBPrivate_Clean: 54016 kBPrivate_Dirty: 57204 kBReferenced: 112688 kBAnonymous: 57204 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB