TurboTax Business 2017 double counting capital gains distributions in Trust Accounting Income?

I just started my 2017 trust return.  Something's happening that didn't last year.  The 'Trust Accounting Income' on my 1041 Schedule B line 8 seems to be double counting the capital gains distribution from my 1099-DIV Box 2a.  The discrepancy is exact.

Does anyone know what's going on here?  Is it a new bug?  Or is it a change in behavior that's expected and correct?

The interesting thing is that it ends up not mattering because further down Schedule B, on line 15 the smaller of line 13 and line 14 is entered, and line 14 has the correct number.  Still, I like to understand all the numbers.

Thank you.