/proc/thread-self/root/proc/thread-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 /.
ec2bc0000-7ffc2e1e7000 ---p 00000000 00:00 0 [rollup]Rss: 136976 kBPss: 136182 kBPss_Anon: 81496 kBPss_File: 54686 kBPss_Shmem: 0 kBShared_Clean: 1584 kBShared_Dirty: 0 kBPrivate_Clean: 53896 kBPrivate_Dirty: 81496 kBReferenced: 136976 kBAnonymous: 81496 kBLazyFree: 0 kBAnonHugePages: 0 kBShmemPmdMapped: 0 kBFilePmdMapped: 0 kBShared_Hugetlb: 0 kBPrivate_Hugetlb: 0 kBSwap: 0 kBSwapPss: 0 kBLocked: 0 kB