I have the same issue.
If you manually calculate the 80% limitation and place in the Carryover absorbed in 2019 input box, the taxable income before NOL (found on 2018 NOL utilization statement) changes to a number that is not the actual taxable income, but the original taxable income plus the absorbed amount. Also, the change (which is an override) screws up the 2019 Computation of Taxable Income for NOL utilization statement.
It seems to be a program error.
PS: I thought I saw something about a bill thats been introduced that would get rid that 80% NOL limitation hopefully it would be retroactive and this will have all been a moot point.