I am having the same issue. The additional $300/$600 charitable which is adding to the standard deduction for nonitemizers is creating a corresponding $300/$600 NOL on the NOL worksheet. It appears the problem is that the additional charitable amount is not carrying over to the NOL classification worksheet which is throwing the NOL computation off by $300/$600.  It did this in 2020 program in the early part of filing season, and I was able to override on the NOL classification worksheet to get it as a nonbusiness deduction.

This year am unable to override line 40 in the total col of this classification worksheet. And on a client that I finally overrode the standard deduction line on the classification worksheet (increasing for the add'l charitable) I now get a message that the return has changed by $600 from the one e-filed. It has not!

My issue is two-fold, 1. the problem with the add'l charitable not carrying over to the NOL classification worksheet and 2. ProSeries assertion that the return is now different than the one I e-filed.