Software Bug, TT Desktop version Form 1040X , line 5 not calculating it is just entering the figure from line 3. All columns

While trying to Amend my 2025 return, I found that the form 1040X Line 5 is not calculating correctly. It is supposed to subtract Line 4a/b from line 3. But it is entering the amount from line 3 no matter what is in Line 4 a/b. This is happening in all columns. If you manually override this to correct it, the software will not allow you to electronically file. Which is terribly inconvenient. I found this because, not knowing about the mistake, I electronically filed the amended return and it was rejected referencing these entries on 1040x line 5. TT support was no help here, other than to say wow it sure isn't doing it right. When you file the 1040x it also files another 1040SR and the figure is right on the 1040SR.

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