Gatsby site freezes after swiping to go back in Safari iOS 12.2 Beta

[slk333]

edit: I realized after making this issue that it's only on iOS 12.2 Beta, so maybe it's the fault of Apple.
iOS 12.2 Beta makes the ancient bug come back:

#2842

Currently on every Gatsby site, when swiping to go back in mobile safari, the screen freezes up and sometimes goes blank for ~2-6 seconds. This really breaks the flow of the site.

As soon as the page go backs I try to scroll, but its completely frozen (until that highlighted state on the button goes away).

[sidharthachatterjee]

I can't seem to reproduce this on http://gatsbyjs.org on my iPhone X running iOS 12.1.3

As far as I know, this was fixed in taion/scroll-behavior#129

[sidharthachatterjee]

Can also confirm that scrollRestoration is set to auto

[slk333]

from the tests I've made, this freeze only appear on iOS 12.2 Beta(I've tested iOS 12.1 and 12.2 simulators, problem only appears on iOS 12.2)
Thank you for your feedback @sidharthachatterjee
What could I do from here?
Is the problem only attributed to Apple?

[slk333]

[sidharthachatterjee]

The issue at #2842 was an iOS Safari bug so yes, looks like this is specific to iOS.

Haven't tested this on the iOS 12.2 beta yet.

[hippotastic]

Can you please send us the output of this site using the browser that you experience the freezing issue on?

https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_nav_all

It just outputs all navigator object properties. This may help as the freezing fix unfortunately had to rely on browser detection, which uses some of these properties.

[slk333]

Hi and thanks for the reply, @rutzfutz

Browser CodeName: Mozilla

Browser Name: Netscape

Browser Version: 5.0 (iPhone; CPU iPhone OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1 Mobile/15E148 Safari/604.1

Cookies Enabled: true

Browser Language: en-US

Browser Online: true

Platform: iPhone

User-agent header: Mozilla/5.0 (iPhone; CPU iPhone OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1 Mobile/15E148 Safari/604.1

[hippotastic]

Thank you. Your browser is still identified correctly by the detection we added in taion/scroll-behavior#129, so this part of the scroll-behavior package is unlikely to cause the freeze you're encountering, as it's not setting window.history.scrollRestoration in your scenario.

The bug must lie somewhere else. Sorry not to be of more help!

[slk333]

Yes, hopefully this will be fixed by Apple before iOS 12.2 ships. I don't know if we should keep the issue open in the mean time. I can open a new one if ever the bug still remains when iOS 12.2 ships (out of beta)

[sidharthachatterjee]

Let's close the issue for now @slk333 since it affects beta iOS. Please feel free to reopen on release if this still occurs. Thank you!