The error occurs when computing the number for Form 1040 line 8.
To compute this value, TurboTax uses the "State Tax Refund Worksheet."
On line 1(c) of this worksheet, TurboTax should enter the "Estimated Tax Paid After 12/31/2023."
The value on line 1(c) SHOULD BE: the STATE Estimated Tax Paid in 2023 for 2022.
But in TurboTax the value IS INSTEAD: the FEDERAL Estimated Tax Paid in 2023 for 2022.
To illustrate this error, I submitted a Diagnostic Form to TurboTax with token number 1246890.