Hi everyone, We are currently experiencing a strange issue with our PWA on iOS and I wanted to ask if anyone has seen something similar before. Setup Around 1,200 active users ASP.NET backend/server PWA hosted on a subdomain: user.PLACEHOLDER.de The app has two main areas: User area: /User Admin area: /Customers Most users install the PWA normally through Safari using “Add to Home Screen”. The Problem The issue only happens on iOS when the app is installed as a real PWA. Steps to reproduce: Admin opens the installed PWA Admin navigates to the admin section (/Customers) Admin closes the PWA while still being inside /Customers When the admin reopens the app, the entire app is broken and nothing works anymore However: If the admin navigates back to the normal user area (/User) BEFORE closing the app, everything works fine The issue only happens if the app is closed while inside /Customers At this point, the only fix is: uninstall the PWA reinstall it login again The Weird Part If the user only adds the website icon to the home screen WITHOUT installing it as a standalone PWA, everything works perfectly. So the issue seems to happen specifically in iOS standalone PWA mode. Additional Notes Only happens on Apple/iOS devices After latest IOS-Update Android works perfectly Has anyone experienced something similar or knows what could cause this behavior? The cookie settings in ASP.NET: options.Cookie.Domain = ".PLACEHOLDER.de"; options.Cookie.IsEssential = true; options.Cookie.HttpOnly = true; options.Cookie.SameSite = SameSiteMode.None; options.Cookie.Path = "/"; options.Cookie.Name = ".AspNet.SharedCookie"; options.Cookie.SecurePolicy = CookieSecurePolicy.Always; EDIT: I currently suspect that the issue is related to cookies/session handling, but I’m not sure. Unfortunately we cannot properly debug iOS because we only have Windows devices available. The mainfest.json: { "manifest_version": 3, "name": "Name", "short_name": "Name", "description": "Buchen von Kursen", "icons": [ { "src": "/images/192x192.png", "sizes": "192x192" }, { "src": "/images/512x512.png", "sizes": "512x512" } ], "display": "standalone", "start_url": "https://user.PLACEHOLDER.de/User", "scope":"/", "content_scripts": [ { "js": [ "service-worker.js" ] } ] }