This problem is still happening today. I spent some time on the phone with TurboTax support last week and discovered at that point that the cause of my problem is that the W-2 dialog does not keep the box 15 state information if the box 16 is blank (or zero). This results in the SmartCheck flagging that the extra box 11 state information collected after the core W-2 dialog does not match a state in box 15. The only way around this is to manually open the W-2 form and fill in the box 15 information.
As of today, this problem is not resolved, but I was able to use the workaround.
