Why is the Highlighter tool in Adobe Acrobat Pro suddenly completely opaque?
Suddenly this week, the highlighter tool in Adobe Acrobat Pro is totally hiding the text behind it. When I try to change the opacity of the highlighter, it also lightens the text opacity behind it. Was there an update that went terribly awry? Nothing on my computer has changed, and this happens on every single pdf document I am trying to use the highlighter on. I've used Adobe products for decades, and know how to resolve most of the quirks. But this one is beyond me. Please someone, help???