Pipeline step 12 inserts extra period at end of sentence (related to text-based equation, maybe)
In Word, start with the sentence, "The answer is F(x)." where the letters are italic and the parentheses are not italic.
In step 12 of the pipeline, the parentheses become italic and there is an extra period at the end of the sentence: "The answer is F(x).."
I'm attaching a Word document with this source content, the correct-looking step 11 HTML, and the step 12 HTML that exhibits the issue.