If you apply bold or italic to some text and then update the TOC, the TOC entries will be bolded or italicized if the TOC text style is defined with just the font family and no traits. Open the attached test document. Change the body text to bold and/or italic. Update the TOC. This is the same bug as creating a new note. If you apply bold and then create a note and the note style doesn't fully define the traits, the note will inherit the last traits you applied.