Does Auto-Sync check the server version before pushing? It should. Firing up c9 IDE this morning resulted in a few files being overwritten which were another developer’s work. Mind you, I had never touched these files before; they were not open in the IDE and I did not sync them myself.
It’s very interesting to me that cloud9 chose to push a cached version before checking what’s on the server first, if you would like deployment times to check what went wrong, please reach out to me.