Pennsylvania has a lot of things that it treats differently than the federal government. Make sure that the reason that it's not being taken into account isn't because of one of those rules.
If that isn't the problem then go back to where you entered the trades and go through your entries carefully to see that you didn't exclude them from state tax somehow.
And, lastly, go through your Pennsylvania tax return very carefully to make sure that they aren't treating the loss weirdly.
Thank you for your prompt response. Mine are stock mutual funds held in a Schwab taxable account that was directly imported. It is the same account that generated a gain last year, which was taxed in PA. Done by a CPA. There is a line on the PA-40 form for this entry.
The TT dialogue asked whether the gains are taxable or not. I have tried answering it both ways. I can't find any other place where I might correct this. I have engaged with the TT first level support folks twice on this subject. They have been unable to help me and only suggest that I pay them for tax advice. I don't see a way to just ask for state tax advice, much less one question.
Since the only thing that is taxable for me (retired) in PA is investment returns, it really is quite simple. If I can't figure this out on TT, I will probably do it manually.