Example: https://photos.app.goo.gl/a8A3WukpMiFPMBaNA
(Disclosure: I work for Google)
- go to https://news.google.com and scroll down until the address bar is hidden
- click on any of the AMP links
- the AMP links loads and the address bar is still hidden
- scroll around the page. The address bar only re-appears if I scroll to the very top, otherwise it stays hidden
I use Chrome 74.0.3729.157 on Android 7
* If you click on an AMP link without scrolling down enough to hide the URL bar, the URL bar remains even as you scroll through the AMP article.
* If you click on an AMP link after scrolling down enough to hide the URL bar (the case you saw), the URL bar stays hidden even if you scroll back up (unless you scroll all the way to the top, at which point you're scrolling the outer page).
I agree this is bad UX, and it happens because the Google News site is loading AMP pages in an iframe. Web Packaging fixes this: https://blog.cloudflare.com/announcing-amp-real-url/
(Disclosure: I work at Google on unrelated things, speaking for myself and not the company)
On a normal webpage:
- I scroll down -> address bar is hidden.
- I scroll up a bit and then down again -> address bar is shown
On any AMP page:
- I scroll down a bit -> address bar is hidden
- and then I can scroll in any direction I want and the address bar never appears unless I scroll to the very top
For me that feels like Google wants to keep me inside the AMP page and makes it harder to navigate to a normal page.