I just opened a previously filed return and it shows that change and pulls up a 1040X showing the reduction in tax. The amount of excess credit repayment is gone from schedule 2.

Ive been doing some "Google Research" and I cannot tell if the IRS has issued the expected guidance on this issue: re: whether to amend, or wait and see if the IRS is able to make automatic changes - like they are supposedly doing for the Unemployment.