Acrobat Pro DC - Disappearing Page

I hope I can explain this correctly. When I'm in Prepare Form, and I roll over a checkbox, the page disappears and stays gone as long as the cursor is over the place where the checkbox is. When I move the cursor off the checkbox location, the page reappears. Also, if I double click the area where the checkbox is located in the blank page, the page comes back with the Check Box Properties open, which it should. Any ideas why this is happening and what I can do to fix it? This problem didn't exist until recently.