Behavior: Applying a foreground highlight to text with an italicized word wipes out the italics.
Expectation: Pen characteristics, which do not compete, would be merged. Foreground highlight would have been applied over the text, preserving the italicized text of the original document text. If the original document had applied a color other than black for emphasis, and I applied my color highlight over top, then I would expect a blending of the two colors.
This is minor, though. I'm so thrilled with this latest release.