I am having the same experience as the individuals posting here. I have extremely simple taxes. I entered my gross wages, my state and federal withholding and it showed a refund of $1100. The ONLY change I make after that is adding the $1400 stimulus payment I received in March. At that point, it changes to say I OWE ~$200. the stimulus is the only thing I add and I suddenly lose the equivalent value in tax refund.
