Software Simulation - Text Boxes not displaying text with a MAC

I have run into a strange issue. I have created a software simulation with Captivate 2019. There are a number of places where the user enters information into a number of textboxes. This all works perfectly on a Windows PC with any type of browser... and it works on a MAC with a Firefox browser. However, if I use Safari on the same MAC, I am getting some strange things where the text box is not showing up and the user cannot see the text they are typing. Any thoughts?