I haven't noticed this ever happening before. I am kerning to reduce a space between two characters and it is give me shaded background behind the line of text when I do so. I've checked settings and don't see anything obvious causing it.
Does anyone know what is causing it?
What color is the shaded background? Is it the whole line of text, or just the kerned character?
If you go to Edit -> Preferences -> Composition you might find a checkbox next to "Custom Tracking/Kerning."
Thanks, I never would have guessed that one. I have no idea how it suddenly appeared but thanks so much for such a fast and correct fix!