I don't think this worksheet works correctly for joint filers with incomes above $150K, which is the point where the "phaseout" begins. The worksheet only uses your 2021 AGI but this makes it impossible to correctly calculate your 2020 payment. To do that the worksheet would need a line for your 2020 AGI. When I put it what I received and it sees that it was less than $2400, it incorrectly assumes I'm entitled to the difference, which I'm not.
I also noticed that when in "forms" mode, which is how I prefer to work, the worksheet doesn't show.
