The reported bug was marked as a duplicate of
Bug 30197 — Zdesktop: Send option on Documents/Briefcase uses localhost instead of actual servername, which was then marked Fixed around the second week of January.
However I am still seeing the problem with ZCS 5.0.12 and ZDC 1.0 RC1, so I just added to that bug report.
Would it be advisable to clone that bug in order to get better visibility?
Also, can anyone else try this out and confirm?