Description: When using a multilingual keyboard that includes Korean in iOS 18, the input element's onChange event is triggered multiple times instead of just once. This issue occurs not only when entering numbers with input type="tel" or inputMode="numeric", but also when entering text with input type="text". This causes unexpected behavior in forms and other input-related functionalities. Affected Devices and OS Version: Device: iPhone 16 Pro OS Version: iOS 18.0 You can reproduce the issue with this CodeSandbox example: https://codesandbox.io/p/sandbox/elegant-dream-jnqh39 Steps to reproduce: Use a multilingual keyboard (e.g., Korean and English) on iOS 18. Type some text into the input field (input type="text"). Also try entering numbers using input type="tel" or inputMode="numeric". Observe that the onChange event is fired multiple times for both text and numeric input. Expected behavior: The onChange event should only be triggered once when text or numeric input changes. Additional Information: This issue has been reported under feedback ID FB15377631. Currently waiting for a response from Apple regarding this feedback.

Hi Folks, do you know what happend with the "shape detection API" feature flag on Safari 18.X (IOs 18.X)?... in previous versions (17.X) i enabled the "shape detection API" feature flag and was able to detect codes like mentioned here... https://developer.mozilla.org/en-US/docs/Web/API/Barcode_Detection_API#browser_compatibility I built a PWA (Service Worker) with Angular 18 and facing this issue immediately after updating to IOS 18.0 (I enabled/disabled the flag, restartet the device several times... no success at all) Do you have an Idea what changed or how i can enable that feature again? Thx a lot in advance.. Cheers Martin

Hi! I have a rather complicated SwiftUI browser app with a WKWebView. There is an option to reload the website after a configurable amount of time. Starting with iOS 18, the app crashes after repeated reloads. How many reloads that are required depends on the device, sometimes 100, sometimes 1000. Reloading is done via a timer that triggers the following code on the main thread: let request = URLRequest(url: url, cachePolicy: policy) self.parent.webView.load(request) The URL is configurable and cachePolicy can be either .reloadIgnoringLocalAndRemoteCacheData or .useProtocolCachePolicy How the crash affects the device also differs from device to device and from time to time. I have suffered from the following crashtypes: App is killed App is killed and Safari also stops working App is killed and the whole OS is really slow The WKWebView stops loading and hangs at 20%. The device is rebooted My app has an option to disable cache. Cache is disabled by setting cachePolicy to .reloadIgnoringLocalAndRemoteCacheData and by removing all cache in a rather complicated way. Basicly i'm doing something like this: dataStore.removeData(ofTypes: types, modifiedSince: Date.distantPast, completionHandler: nil) if let klazz = NSClassFromString("Web" + "History"), let clazz = klazz as AnyObject as? NSObjectProtocol { if clazz.responds(to: Selector(("optional" + "Shared" + "History"))) { if let webHistory = clazz.perform(Selector(("optional" + "Shared" + "History"))) { let o = webHistory.takeUnretainedValue() _ = o.perform(Selector(("remove" + "All" + "Items"))) } } } if let cachesPath = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first { let contents = (try? FileManager.default.contentsOfDirectory(atPath: cachesPath)) ?? [] for file in contents { if foldersToDelete.contains(file) { let path = cachesPath.appending("/").appending(file) do { try FileManager.default.removeItem(atPath: path) } catch { print("Can't delete cache file: \(path), error: \(error.localizedDescription)") } } } } The cache state affects the intensity of the crash. Disabling the cache shortens the time the app is working, while enabling the cache reduces the intensity of the bug. Based on my investigation, I suspect that loading a website in a WKWebVew leaks memory in iOS 18. If the whole website needs to be requested (= caching off), it results in a more significant memory leak and a faster crash time. Is this a known issue? Am I doing something wrong? Is there a potential workaround?

When I run the following code in XCode iOS Simulator on Safari (connecting via Safari DevTools): navigator.serviceWorker.ready.then((reg) => reg.pushManager.subscribe({ userVisibleOnly: true, applicationServiceKey: "..." }).then((sub) => console.log(sub.toJSON()))) I get the response: { keys: { p256dh: "", auth: "" } } But I'm expecting p256dh and auth (and endpoint) to be filled out. Why is it not?

In Safari Web Extensions on iOS 18, declarativeNetRequest Rulesets and Dynamic Rules take over twice as long to apply -- which causes rulesets to often fail to apply before sites load. In a boilerplate Xcode project you can note the time difference toggling the OISD (https://oisd.nl) ruleset on iOS 17 and iOS 18 simulators. Additionally, if you force quit Safari and reopen to a site with ads blocked by OISD list (e.g. espn.com) the content will be blocked in that initial state on iOS 17, but not in iOS 18 due to the latency. Based on the boilerplate extension, this bug is impacting all Mobile Safari Extensions using declarativeNetRequest Rulesets and Dynamic Rules. We know several other extension developers dealing with this issue. Our team wrote detailed reproduction steps in our Feedback Assistant ticket: https://feedbackassistant.apple.com/feedback/15196130 but have received no responses. I would attach a screen recording here but it won't allow me.

I am working Web to App flow for my product. Tolink to my app from web service, I define uri scheme from app and use it from my web site. But, when I try to use this scheme from mobile safari web, It sometimes failed with message that uri is invalid. That is weird It failed SOMETIMES not always Even I tried with same url. In my device, there is current version app. Why this happen? How can I resolve this issue?

This is problematic when opening links to other websites that require separate authentication. A typical example would be a Gmail web app, and then trying to open a link to a GitHub PR. In the 18.0 release notes, this is mentioned as Added support for opening links directly in web apps on macOS. (113034778 It'd be great if this could be customizable so that one could choose the old behavior.

Since iPadOS 18.x WKWebView seems to have a bug within its Fullscreen API (which can be enabled via WKPreferences.isElementFullscreenEnabled). This bug has the effect that websites trying to make an element (for example a video player) fullscreen fail to do so. This does not always happen, most of the time the fullscreen mode does work fine, but sometimes (far too often to be ignored) it does not. If an instance of WKWebView shows this issue, it can not be "fixed" by reloading the page or loading other pages, this issue exists in this instance forever. My App is a web browser App so I can create and remove WKWebView instance easily (by opening or closing Tabs). And there are times where I never see this bug, and times where ever other tab shows this bug. It's totally unreliable. The App does not show any issues at all when running under iPadOS 17 or older. The issue is only present under iPadOS 18.x. After some testing I've found out that when the bug has affected an instance of WKWebView, the JavaScript call element.requestFullscreen() will work if the element is a video element, but does no longer work if it is another element (like a DIV). If an instance of WKWebView is not affected by this bug, element.requestFullscreen() will work for all HTML elements. Does anyone has experienced this bug as well? And maybe found a workaround? Or maybe found a pattern which helps to find out what exactly is triggering this bug?

I'm developing an application that utilizes WKWebView to display a webpage. My goal is to improve the performance and loading speed of this webpage by intercepting specific API calls and providing pre-stored JSON responses directly from within the app, ensuring the webpage renders instantaneously. The challenge I am encountering is the inability to intercept HTTPS URL schemes directly from WKWebView. Any insights or solutions from the community on how to effectively manage and overwrite these particular network requests would be greatly appreciated.

When user opens a new tab and loads a website, the declarativeNetRequest.getMatchedRules() returns nil and on reloading in the same tab it returns the URLs blocked. Is this an expected behaviour?

Hi, I had been working on an extension without any issues, running it from Xcode and debugging locally in Safari. However, without making any code changes, and after uninstalling the extension, it stopped appearing in Safari after building for local debugging. Does anyone know what might be happening or how I can clean up the system? Thanks a lot and best regards.

Hi. I've noticed on both iOS 17 and iPadOS 16 that when an user opens a website in a WKWebview (e.g from Gmail), then requests it to be opened in the external Safari app (through the "compass" icon), their localStorage data is not transferred to the Safari tab. This behaviour breaks web experiences that rely on data being locally stored, e.g auth tokens or user identification data. It effectively stops users from being able to use some websites outside of an in-app context. I am aware of Webkit's tracking prevention mechanisms such as https://webkit.org/tracking-prevention/#partitioned-third-party-localstorage, but I don't think this should apply to this case. Here the user is navigating between two Safari tabs (one internal and one external) on the same domain, exact same URL, by pressing a native Safari webview icon. There is no third-party cross-domain tracking happening. Is this a bug or intended behaviour?

I have noticed that tabs.onRemoved works differently in Safari 18 comparing to other browsers and Safari 17. Open a tab e.g. apple.com Take note of the active tab id using this code: browser.tabs.query({currentWindow: true, active: true}, (x) => console.log(x[0].id)) Add a listener on onRemoved: browser.tabs.onRemoved.addListener(console.log) on the active tab, navigate to e.g. https://developer.mozilla.org Take note of the active tab id again (using the same tabs.query). Expect: there should be no console.log of onRemoved. the active tab id stays the same. Actual: there is a console.log of onRemoved. the active tab id is changed. Please help. If this is a bug introduced in Safari 18, it would break a lot of JS Web extensions.

I have a homepage with an iframe containing my app LocalStorage, but when opening my app page the LocalStorage is lost. structuration of the page: homepage : domain.com iframe and app : app.domain.com the localstorage is set up directly within the iframe and postmessage between iframe and parent works. We see in the parent page that the LocalStorage for the sub-domain is set but opening the sub-domain on a new window it disappears : The problem is detected On Safari 18 only.

We used declarativeNetRequest.getMatchedRules() to retrieve the blocked URLs. While we do receive a list, we noticed that the URLs captured do not always reflect the ones the content blocker is actively blocking at that moment. However, upon reloading the same page, the correct URLs appear. Screenshots are attached for your reference. First load: After reload:

I have noticed that storage.local.get API works differently in Safari 18 compare to other browsers and Safari 17. browser.storage.local.set({abc: 123}) browser.storage.local.get(console.log) // {abc: 123} browser.storage.local.get({abc: null}, console.log) // expect {abc: 123} but got undefined instead. According to MDN, storage.local.get should work with an object with object names as keys and the default value as value. According to Safari 18 Release notes, this may be related to a fix: 'Fixed getting an empty key from storage. (99440265) (FB11427769)'.

We are using declarativeNetRequest.getMatchedRules() to get the matched rules' URLs. When user switches website in the same tab, it returns URLs which were blocked in the previous website also, within past 5 minutes. Is it possible to fetch getMatchedRules() only for current webpage in the same tab?

Hi, I am developing the Click & Read web add-on for Chromium, Firefox and Safari. We use xcrun safari-web-extension-converter tool to generate the Safari add-on. The build on Xcode had no meaning errors/warnings, until we had to switch to a more up-to-date MacBook (required as deprecated Mac had no support for latest macOS and thus for Xcode compatibility !). So now I build my add-on on an Apple M1 MB Air on Sequoia 15.0 with latest Xcode, but I encounter an error ? or warning ? : NSBundle file:///System/Library/PrivateFrameworks/MetalTools.framework/ principal class is nil because all fallbacks have failed Unable to create bundle at URL ((null)): normalized URL null Unable to create bundle at URL ((null)): normalized URL null Unable to create bundle at URL ((null)): normalized URL null But it doesn't prevent the add-on build to complete as I am able to open it onto Safari. Then, when loading the add-on on a test web page, I get this error on safari console: Error: Invalid call to runtime.connect(). No runtime.onConnect listeners found. BTW, the same add-on Dist works as expected on Chrome or Firefox (on macOS). So it seems the runtime listener runtime.onConnect.addListener isn't initiated on Background script... Thanks for your feedback and help

Dependent fields for multi-select options and dropdown fields are not displaying in Safari, although they work correctly in Chrome and Firefox. Scenario You have a form built with ASP.NET and Razor, where users need to select multiple options from a dropdown list to trigger the display of dependent fields. Multi-Select Dropdown: The form has a multi-select dropdown for choosing different categories (Category A, Category B, etc.). Dependent Fields: Based on the user's selection, certain dependent fields should become visible. For example, if the user selects Category A, an additional input field titled "Details for Category A" should be shown. Expected Behavior (Chrome & Firefox) When the user selects Category A or Category B, the corresponding input fields are displayed dynamically, functioning as expected. Issue in Safari : In Safari, the dependent fields do not show up when a user selects any category. It's as if the JavaScript or the CSS responsible for displaying these fields is not executing correctly. CHROME SAFARI Browser: Safari (Version 18.0 (20619.1.26.31.6)) Operating System: MacOS (sequoia 15.0) Device: MacBook Pro 14 Inch Apple M3 Pro , iPhone 14 iOS 18.0

Hai guys, I'm trying to do autofocus on the search input while user clicks the search icon but its not working as expected in iPhone and iPad so go through some blogs and stackoverflow they mentioned the apple has removed the focus() from touchable device for usablity reason is anyone come up with the same issue or having solution for this kindly share. That must be helpful for me.