Makes me nervous too. Also means waiting until the last day or two to recheck the return, again, and then file because with this change in functionality, the user has no way of knowing what has been corrected and if the corrections even apply to their returns (fed and state). I've found a fair number of minor errors already - those are the easy catches (mostly line number references left over from 2018 that still appear in the 2019 forms) and reported them through the feedback popups.
