4/6/23 Turbotax software update changed amount due by 15% - really??

I was finishing up my taxes, and the software wanted to update before doing the final review (Windows Premier +California). It had previously not found any errors; I was just checking some calculations and wash sale entries otherwise it would already be filed. The update changed the amount due for Federal by 15%, and the state refund is now an amount due. 

 

I can't find any information on what was in the 4/6/2023 update. I don't trust the software now. That's just too much of a change. And we now owe a perfect multiple of $1000 - that seems too unlikely.

 

Any suggestions to make me trust this software again? I've used it for years and have never seen such a large discrepancy in my return after an update so late in the tax season.