A customer noticed this issue with OSX finder and I am able to recreate in my VSIM. The issue occurs with cDOT 8.0, 8.1 and 8.2 in my testing.
When a volume has UNIX security style, OSX works to copy files for both command line (terminal) and Finder.
When a volume has an NTFS security style and there is an NFS export with a name-mapping UID to SID, OSX works to copy files from only command line. Finder fails to copy when mapping the uid to a sid. The odd behavior is that it works on terminal so we know the mapping is working.
Anyone seen this or know of any workarounds?