Thanks for the info, Dana. I'm glad to hear that installing Firefox has resolved the issues.
Multiple browsers are a part of life for me (as an engineer and web developer). Unfortunately it's not as simple as "it's an expensive phone, it should work" - often the cost is associated with the hardware and the modifications the manufacturer has made to the operating system and default apps (at present a lot of development tends to go into the camera and camera apps, for example).
Each of the browsers (Chrome, Firefox, Edge) uses a different rendering engine. That means that each browser interprets the code that makes up web pages slightly differently (despite there being attempts to standardise everything, we're not quite there yet). It was only a few years ago that I still had to contend with clients using Internet Explorer 7 and 8 (which are horribly broken by today's web standards) and company Intranet sites (internal websites) were "Designed for IE8".
You may even find that the next update to Chrome (usually every few months) solves the problem. Sometimes bugs sneak through in Chrome and Firefox and adversely affect a small percentage of websites (over my time as a developer there have been periods where both browsers have independently had bugs that affected the sites I was working on). Without spending time debugging it, it's difficult to say whether the issue is with the browser or the NGA site (and even then it might not be the NGA site itself, but one of the external advertising scripts). I also don't have access to your device or the NGA source code (
@dave is the site admin and web designer), so I would not be able to fully investigate.
The possibility still exists that the issue is being caused by an addon in Chrome, too - your new Firefox installation probably doesn't have any addons installed yet.