Formula Bar Doesn't Display Contents
 

I've tried searching this and always come up with unrelated issues. My formula bar is displayed. When I select a cell the formula bar shows blank. However if I click in the formula bar and type a character then the contents displays until I move to another cell. When I scroll back it is invisable again. I can see the contents on my spreadsheet just not in my formula bar. If I start editing the contents it displays the contents. This just started today. How do I get it back to normal?