[throwaway9143]

Yes, a full local reset. Its an issue that plagued us for almost a year sporadically across several thousand customers. After instrumenting our app with very detailed remote logging, we were fortunate enough to catch it on one of our in-house local test iPhones. The logging showed an app with rich local state, the app close, then several minutes later the app open with no local state. Everything was wiped. This lined up with the feedback we had been receiving. Specifically for us, the push notification subscription tokens were being erased/revoked from the browser, meaning the customer couldn't receive notifications anymore. But the logging showed all local state was reset, including IndexedDb. If you dig through the Apple developer forums and StackOverflow, you will see many others complaining about this. You will also see links to resources claiming that Apple ITP does not do this for PWAs, specifically:

https://webkit.org/tracking-prevention/#intelligent-tracking... "Home Screen Web Application Domain Exempt From ITP". This is 100% bullshit though.

My personal belief is that Apple is purposefully nuking PWAs from orbit in a non-deterministic and "buggy" way because they are a threat to the app store business model, and I suspect if they frustrate enough developers, people will stay away from PWAs.

[terhechte]

Nah. I used to be a iOS developer. The official native frameworks are buggy as hell. Everything is broken all the time. Occam's razor is on this behaviour being just another bug that receives little attention because everything else is also buggy. I can't even blame them, the iOS api surface is huge, and every year there's new frameworks and every couple of years new devices. Android has the advantage of being open source, which allows external contributions to fix bugs, which oftentimes fixes the small-percentage bugs because one developer ran into it and decided to fix it. On iOS this is impossible, and there's no corporate incentive to fix small-percentage bugs.

[danlugo92]

They have trillions, no excuse.

[hollowturtle]

You’re wrong, this has nothing to do with bugs. We’re speaking of Safari not implenting features for years and pushing back many of them because of “security”. All bs.

[DANmode]

Hoping everyone reading this understands what's being kept from us.

Cross-platform webapps should be table stakes for adopting any platform.