Unable to change permissions when connecting over SMB

As of OS 10.9, SMB2 is the default protocol when connecting two Macs running 10.9. Unfortunately, SMB2 seems to be half-baked at this time. Among the issues I've encountered, one of the more vexing ones is that it does not seem to be possible to change permissions on a remote file or directory over SMB. In Finder, the permissions section simply says "you have custom access" regardless of the file/folder's actual permissions. Even if I have full read/write access to the file/folder, I have no way to change its permissions.

chmod and chown also don't work. They don't report an error – they simply don't do anything when I run them on remote files.

If I connect to the same system via AFP, everything works fine and I can change permissions in Finder, and via chmod.

Is anyone else seeing this behavior? Are permissions just broken under SMB2?