If this drop-down list is set to Simple Markup, then your comments are displayed differently. In Figure 1, this is set to All Markup, so the comments are displayed as expected. Note the Display for Review drop-down list, at the upper-right corner of the Tracking group. You do this on the Review tab of the ribbon, in the Tracking group. If your comments don't display in this manner, the first thing you want to do is to check how your markup is being displayed. The normal way that a comment is displayed on-screen.
(Comments are just one element of what is collectively known as 'markup.' Another, perhaps more understandable, are edits made while Track Changes is turned on.) Normally, Comments are shown with a line, anchored text, and the comment itself. When you insert a comment in a document, how that comment is displayed depends on your display settings for markup. She wonders why the yellow highlighting disappeared and what she can do to get it back. The comments are still there Jodie can see them when she chooses to view the markup. Recently, though, the yellow highlighting has vanished. When Jodie selects some text and then inserts a comment in her document, the selected text is highlighted in yellow to let her know that the comment applies to that text.
