Retirement tax questions

As you will see in the snapshot, there are two scenarios to show how the stimulus monies have increased my payment owed. One without adding Stimulus entry, tax owed $3219. Second with stimulus entry added, tax owed increased to $6691. So unless TT is not calculating correctly, then the Stimulus monies are being taxed, and not a credit. Basic simple math. And the data is from the 1040's using the two different scenarios.