I believey you have an hidden character that shows up. You might want to copy your text through notepad or something similar in Mac to get rid of these.
Thanks for the response. That's what we thought too, however some of the text is manually typed not copy and pasted and still having the issue. For example, the "Risk Management Principles" and the learner prompt at the bottom left, "To learn more, select each RM Principle." were manually typed in. Here's a screen cap of it.
Btw, can you explain why the text in the reveal box has expanded outside of the box at the bottom and the prompt text at the bottom of the screen on the left is on 2 lines? In my Edge work file and preview, they are in the box and one line as they should be.
Fonts are rendered differently in each browser and also depending on screen resolution. You should extend your text box some more in the UI so It does not occur.
For the strange Characters, I would suggest you try another font and see if you still have the problem. it may be a problem with that font in particular.