Invisible characters popping up in HTML 

Hello,
we have this invisible character showing up all over our HTML. Literally have no idea why or how to fix it. It creates these huge gaps. I checked to see if the same thing happens in Firefox, the issue is still there but the  text doesn’t show up in the inspector. Has anyone ever experienced this? Our website is only local right now so I don’t have a live link to share. Here’s an example:

Any help is much appreciated! Thanks.

How do you create the text files?