Displaying markers in Viewer window for audio-only track

Thanks in advance for the help...sorry if this is a noob question..

I have an AIFF file (dialog) with many markers. I can view them in the browser, but the marker descriptions don't show up in the viewer window. For clips with picture, the markers display as normal.

How do you get the audio marker descriptions for audio-only clips to show up in the viewer window? The manual doesn't seem to cover this, I must be missing something....?