Thanks for staying with me on this. I quickly tried what you asked by pulling it up on my iphone as web app using safari and was able to get the view correctly. I did the same on an android device and the result was consistent. Would that be a good enough test? Unless there is something in particular you want me to test on vanilla html then I will. Waiting to hear what you have to say on that.
iOS, stuff not loading only in Cordovaā¦ some security feature!
https://cordova.apache.org/docs/en/7.x/guide/appdev/whitelist/index.html
https://cordova.apache.org/docs/en/latest/reference/cordova-plugin-whitelist/
For development itās ok to go with this in config.xml:
<allow-navigation href="*" />
After I added this, it worked 
I donāt really understand why this this tag works, and I am pretty sure that using a meta tag would be more secure - but you can figure that out yourself I hope.
Let me know if it works for you, then I consider this case closed 
(There is also an issue with the status bar being over the iframeā¦ but thatās a different issue)
Ok, I will give it a shot and get back to you.
I tried that and it actually worked.
You are a hard working man 
you can go ahead and close this particular issue.
Should I open a new issue for this one? I saw the same here at my end. Did you see the same behavior on your android device?
No, Android was confined to the normal space, the system bar is non transparent there for the app.
Yes, please open a new topic and describe what you are doing and what is happening (with a screenshot).