I saw this same issue - everything looks normal but no files are synced.  In our case it was a problem with our p4 edge server and parallel syncing in p4java (IIRC).  This was affecting us even though I had parallel syncing disabled.  The workaround was to set the parallel sync options to the following:

parallel: [enable: true, minbytes: '0', minfiles: '0', threads: '0']

Thought I would comment just in case you have the same cause.

Yes. I forgot to update that I find out that parallel sync is the problematic setting.

• I started reproducing it with non-parallel sync
• How is this 'Not a defect'? I'm assuming it was closed by accident as no comment was made and reopen

We have recently been hit quite badly by this issue. Using William's work around seems to have fixed it for us. Any chance this is going to be looked at soon?

I'm running into this problem with parallel sync. The log output shows the files being added, but the workspace on the build machine is empty. The sync succeeds if I disable parallel syncing. However, we really need parallel sync to work.

tsackett - I think we found that the issue was partially related to proxy or edge servers and how they were set up with regards to parallel syncing.  So you could look at your p4 server configuration to get it to work properly.  Perhaps you could reply here if you figure out the steps that work for you.