The same glitch just occurred for me! I was in the final step... it wanted me to make a few reviews. The system basically asked me to confirm info on my W2. Once I clicked next, it added a whole new income amount (under a previous employee name from last year taxes).
this causes me refund to result in owing taxes! Now that I caught the error and corrected it... my refund is still showing significant off.
Very concerning. Hope to see this fixed.
