Ignoring a problem is not fixing a problem.
Well, my knee hurts every time I stab it with a fork. I tried everything to make it stop, but it still hurts every time I jab that fork into my knee.
aka, sometimes knowing about the problem and avoiding the problem until somebody finds a way around it is a good idea in the short term.
Since it only happens after a Sync, it may be a file on the drive that is causing a problem. Interrupting the boot process, though those are usually something named the same as something in the bootstrap startup process.