Payment of estimated taxes in the state of Indiana assessing under payment penalty

I pay my Indiana state taxes quarterly.  I enter them in the estimated taxes section in Turbo Tax.  Payments were paid on time 4/15/2025, 6/15/2025, 9/15/2025 and 1/15/2026.  Turbo tax is charging an underpayment penalty of $13 with the message that payments are less that 90% of total.  This is odd since I am actually getting a refund.  If I change the date of the 4th quarter payment to anytime in 2025 the penalty goes away.  The 4th quarter is not due until 1/15/2026 which I paid before that date but in 2026. Its as if it is not counting that payment against the 2025 taxes.  Is this a bug?