@josh Just getting back to this. Did I provide everything you needed above? I don’t think it’s a DNS issue since some browsers in the same device work while others don’t, which unless there are specific DNS resolution options within each browser (and I don’t think there is), implies it’s not DNS?
I didn’t see which WebView version is being used. 
The error message ERR_NAME_NOT_RESOLVED reads as a DNS resolution issue. That doesn’t necessarily mean it’s an issue with your internet, but it points to a DNS resolution issue in that screenshot.
Understanding what WebView version you are on and ideally updating it to as new of a version as you can would be ideal here.
I would also be curious about these results.