Appologies for the delay, I didn't get any notification that you had replied. Hopefully you will see this.
1. I have no idea what the 2 files it is trying to sync are. There's no way that I can see on the Mac client (little red X, green check mark like you'd see on the windows client) which files are in question..
2. No, let's say I add a 1mb file from my work PC and I want to sync to my MAC. ODFB on my MAC will see the file and say it's syncing it. However, it'll never finish the sync operation. However, if I shut down ODFB, the file will be on the MAC and then when I restart ODFB, it'll no longer try to sync that 1MB file.
Screenshot as you requested: