Fonts issue in IE11 when publish from Captivate 2019

So that means the browser is rendering the actual fonts and you are not seeing an image of the various text objects. The difficulties with various browsers are they all have their own rendering method for content intended to be displayed on the web, including the fonts themselves. IE11 is actually kind of an old browser at this stage. Microsoft still supports it, mostly for companies who require it for older web applications that they wish to continue to support. I'm sure Microsoft would love to get rid of it at this stage but they don't want a revolt from all those Windows Enterprise customers.

Rather than using what is technically a system font for your eLearning, why not try using an Adobe Font? While Verdana is considered web-safe, because of the nature of different devices, even something as universal as Verdana will look vastly different on different devices anyway. Choosing an Adobe Font still may show some differences from what you see on your computer versus on the web, you can be sure that every person accessing your course will see the same web font from Adobe's server. The only possibility of problems is if users attempt to launch your course but don't have access to the regular web while taking the course.