maximum-scale advice is not entirely true

Created by: tmcw

Summary

On a device with iOS >= 10

• Focus the input on this page, which includes maximum-scale=1 https://max-scale-test-2lgyfhbw3.now.sh/
• Focus the input on this page, which does not https://max-scale-test-2lgyfhbw3.now.sh/index-no.html

Expected result

Reading the page about maximum-scale, I'd expect that maximum-scale does not have effect, so the pages should behave the same.

Actual result

maximum-scale does have an effect: it prevents the page from zooming into the focused input. The Apple post referenced in the a11yproject article is vague about what actually changed, but I suspect that what they're saying that "maximum scale does not forbid user zooming" rather than "maximum scale has no effect". maximum-scale does have at least one effect - it changes the behavior of Safari when an input is zoomed.

Additional Information

This demo works on my iPhone XR, as well as all the devices in Simulator.app that I tested.

Additional Information

Unfortunately I can't see any way to both preserve the behavior of not zooming on focusing - which, for our application, is an impediment to the user experience and unnecessary because we're using large font sizes - and also abide by this accessibility rule, which - as far as I can tell, is a little oversold. Via both the a11yproject page and Apple's site, I expected maximum-scale to be actually ignored, and it isn't.