After upgrading to Xcode 15.2 or above(Till Xcode 16.2), users are unable to open Site B (HTTP URL) from Site A (HTTP URL) within our Browser app when loaded in WKWebView. Clicking the link to Site B results in a spinning wheel, but the site does not load. This issue is not present when the app is built with Xcode 15.0.1.
Additionally:
Users are connected to a VPN, which is required to access the sites.
Site A and Site B are on different domains (cross-domain request).
Expected Behavior:
Clicking the link to Site B should successfully load the site with user information passed from Site A.
Current Behavior:
Clicking the link results in a spinning wheel, but Site B does not load inside WKWebView.
Technical Details:
Both Site A and Site B use HTTP (not HTTPS).
Site A and Site B have different domains (cross-domain request).
Do not use location.href for transitions. Instead, we temporarily set about:blank in an iframe and then submit data via a form to the target system’s URL within the iframe.
This approach worked in Xcode 15.0.1 but fails in Xcode 15.2 or above.
Users are connected to a VPN, which is required to access the sites.
WKWebview is not receiving navigation delegate callback for Site B
Steps to Reproduce:
Ensure the device is connected to a VPN.
Open the app (using WKWebView) built with Xcode 15.2 or above.
Load Site A (HTTP) within the app in WKWebView.
Click the link to Site B (HTTP), which should open in an iframe.
Observe that a spinning wheel appears, but Site B does not load.
Environment:
Xcode Versions Affected: 15.2 or above (issue present), 15.0.1 (no issue)
iOS Version: All iOS versions
Devices: iPad
Questions:
Has there been any change in WKWebView’s handling of HTTP URLs or VPN-related network traffic in Xcode 15.2?
Are there any new security policies, iframe restrictions, or VPN-related changes in this version that might be affecting this behavior?
Request for Assistance:
Can you confirm if this is a known issue or an intended change?
Are there any workarounds available?
Explore the integration of web technologies within your app. Discuss building web-based apps, leveraging Safari functionalities, and integrating with web services.
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We have a Web Extension that uses firebase for auth. It was working fine until the latest version of Safari 18.3 got released few days ago on January 27, 2025.
All of out extension versions stopped working on it; even the ones that are published on App Store. It uses FirebaseJS v9.23.0.
Same version of the extension are working fine on other browsers. We use onAuthStateChanged to listen to auth related events; but it is never fired now.
I’m experiencing an issue where Safari takes approximately 30 seconds to load web pages on mTLS-enabled sites. However, when I enable Private Browsing mode, the problem disappears. This suggests that the issue is not related to the network environment.
To provide more context, I’ve attached a Wireshark packet capture for reference. From the logs, it seems that the TLS handshake process encounters delays, but I cannot identify the exact cause.
Has anyone encountered a similar issue or can provide insights into what might be causing this behavior? Any troubleshooting suggestions or fixes would be greatly appreciated.
OS: iPadOS 18.2.1
Thank you!
Wireshark packet capture
Topic:
Safari & Web
SubTopic:
General
In my application, I use HTML pages to display the interface. Since it’s a cross-platform app, the pages and interactions work properly on other platforms. However, in WebKit, because HTTPS protocol is used, JS requests from the page cannot use the ws protocol but must use the wss protocol under HTTPS. Is there any way to allow a webpage under HTTPS to use ws requests normally? Google Chrome can do this.
Topic:
Safari & Web
SubTopic:
General
Hi, I'm here to Report a Problem with the IOS 18.3 UPDATE.
So, when i Download a file, any file. The Download Progress has no problems, but when the download complete, Nothing happens it just keeps the blue line of the download, and then I can’t open that file…this only happened to me when i downloaded the IOS 18.3… hope it'll be fixed ASAP.
Bye!
Safari throw a ViewTransition error, called ' Unhandled Promise Rejection: AbortError: Old view transition aborted by new view transition.' however, i don't find how to catch it.
i used 'try..catch' or Promise.catch, or catch it in finished/ready/updateCallbackDone Promise. These all don't work.
I have a local HTML file used to display mixed content with images and text. Here's the issue: the same file displays everything correctly in Google Chrome, showing both images and text as expected. However, when opened in Safari, only the text is shown—images are missing, which is very strange.
Interestingly, if I remove .png from the title attribute of the tag, the images show up properly in Safari. Alternatively, if I comment out the inclusion of html2canvas.min.js, the images also display correctly (although the layout breaks without it).
I'm not sure if this is a Safari-specific issue. Can anyone explain what might be causing this problem?
Topic:
Safari & Web
SubTopic:
General
How can I set it as a formal payment environment if I can make the payment now without any deduction?
A DNR rule with lower priority is being applied before a DNR rule of higher priority on Safari. Specifically, a low-priority DNR block rule that matches a request is being applied before a high-priority DNR redirect rule that matches the same request, preventing the redirect from occurring. The only way to get the high-priority redirect rule to occur is to remove the DNR block rule. This does not occur on other browsers.
I have already submitted a Feedback Assistant report about this bug: FB16535579
How to reproduce:
Create/install a web extension on Safari with the declarativeNetRequest and declarativeNetRequestWithHostAccess permissions
Open the Web Extension Background Content console and add a redirect rule with a high priority number. For example:
await chrome.declarativeNetRequest.updateDynamicRules({addRules: [
{id: 5000, condition: {urlFilter: "||www.google-analytics.com*/ga.js", resourceTypes: ["script"], domainType: "thirdParty"}, priority: 80, action: {type: "redirect", redirect: {url: “http://www.apple.com/”}}}
]})
Add a block rule of lower priority for the same urlFilter:
await chrome.declarativeNetRequest.updateDynamicRules({addRules: [
{id: 5001, condition: {urlFilter: "||www.google-analytics.com^", domainType: "thirdParty"}, priority: 1, action: {type: "block"}}
]})
Visit https://efforg.github.io/privacybadger-test-fixtures/html/ga_surrogate.html
Check the network tab and see that neither a request to Google Analytics nor apple.com appear. This means that the request to Google Analytics was blocked instead of being / before being redirected
Remove the block rule:
await chrome.declarativeNetRequest.updateDynamicRules({removeRuleIds: [5001]})
Reload https://efforg.github.io/privacybadger-test-fixtures/html/ga_surrogate.html.
Check the network tab and confirm that there is a request to apple.com, showing that the redirect rule is only applied if the lower-priority block rule is removed. The priority of the DNR rules should handle this without having to remove a DNR rule.
I have confirmed that the incorrect application of DNR rule priority happens on other top level domains, with other urlFilters, and with other redirect URLs. I confirmed that this is happening while I’ve granted my extension permissions on all websites.
ios drop file wrong file name
I use the following simple JS code to drag file from the browser to the desktop.
Works perfect on MacOS.
onDragStart(event, ucpView) {
let file = new BrowserFile([this.file.fileContent], this.file.displayName, {
type: 'application/ucp-scenario'
});
const fileURL = URL.createObjectURL(file);
event.dataTransfer.setData("DownloadURL", `application/octet-stream:${file.name}:${fileURL}`);
event.dataTransfer.setData("text/uri-list", fileURL);
}
but on iOS it keeps nameing the file
Text1.txt
Text2.txt
...
and ignores the DownloadURL
whats the best way to get it workng on both OS?
Topic:
Safari & Web
SubTopic:
General
My website ccflood.us is a simple map that uses a CSV file for the data that is displayed on the map. It uses the ESRI JS API.
Recently the points on the map began missing the text in the boxes only on Apple devices that have been upgraded to iOS 18.
Has anyone also had this happen to their site? If you have upgraded to iOS 18, try this site on your iPhone then look at it on an Android phone or your desktop browser. You should seet the values in the boxes and a "+" at points that have no value.
If you've had this happen with your site or have heard of a fix, please reply to this post.
Topic:
Safari & Web
SubTopic:
General
In our web application some functionalities will allow user to upload multiple images (More than 25 images) in a single page
It is working find in all OS and browsers except iOS
When user try to upload images directly from camera there will be some overlaps, duplication, missing etc.
This is happening in both Safari and Chrome, we had a thorough check in our application and found every thing is working fine from our end
You can reproduce the issue by creating a web page which accept more than 50 images (we tried the same in ASP MVC Core & PHP) and showing the images in order
access the page through your iPhone using Safari or Chrome
Try to upload images directly from your camera, try sequential images (Image of a stop watch, or some thing like that) so that you can easily identify the order of files uploaded
and check the listing page of uploaded image (Try these steps multiple times)
You can find some images are duplicated and some are missing
Subject: Help Needed with App Clip Implementation
Hi Team,
I need some assistance with implementing App Clip behavior in safari and also experimenting using TestFlight app.
Default App Clip URL:
https://appclip.apple.com/id?p=com.jey.ppclient-prod.appclip
Website for App Clip Integration:
https://appclip-sand.vercel.app/customer
Current Behavior:
Default App Clip URL:
When I embed the default App Clip URL in an HTML tag like below:
Launch App Clip
it does launch the App Clip. but it says the appclip not supported in your region
I've already added this configuration under Local Experience in App Store Connect.
Website Integration:
I’ve registered the site using the Advanced App Clip Experience.
The apple-app-site-association file is in place.
When I visit the site, the App Clip does launch as expected.
What I Need Help With:
I want to launch the App Clip from a custom button click, using either:
The default App Clip URL, or
The website URL (e.g., https://appclip-sand.vercel.app/customer) with additional query parameters like userId or sessionId.
Is there a supported way to achieve this—perhaps through JavaScript or a specific tag setup that works with either Local or Advanced Experience?
Your guidance would be greatly appreciated.
Thanks,
Jey
How to allocate the width of each column when customizing the rendering of HTML tables on iOS with limited screen width
Topic:
Safari & Web
SubTopic:
General
Crash Stack:
thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BREAKPOINT (code=1, subcode=0x19ba3bb04)
frame #0: 0x000000019ba3bb04 CoreFoundation`forwarding.cold.2 + 92
frame #1: 0x000000019b8ab718 CoreFoundation`forwarding + 1288
frame #2: 0x000000019b8ab150 CoreFoundation`_CF_forwarding_prep_0 + 96
frame #3: 0x000000019df230b0 CoreText`TCFRef<CTRun*>::Retain(void const*) + 40
frame #4: 0x000000019e052050 CoreText`CreateFontWithFontURL(__CFURL const*, __CFString const*, __CFString const*) + 476
frame #5: 0x000000019e052874 CoreText`TCGFontCache::CopyFont(__CFURL const*, __CFString const*, __CFString const*) + 144
frame #6: 0x000000019df27dcc CoreText`TBaseFont::CopyNativeFont() const + 232
frame #7: 0x000000019df8ee64 CoreText`TBaseFont::GetInitializedGraphicsFont() const + 152
frame #8: 0x000000019df26d70 CoreText`TBaseFont::CopyVariationAxes() const + 296
frame #9: 0x000000019df2d148 CoreText`TDescriptor::InitBaseFont(unsigned long, double) + 768
frame #10: 0x000000019df21358 CoreText`TDescriptor::CreateMatchingDescriptor(__CFSet const*, double, unsigned long) const + 604
frame #11: 0x000000019df251f8 CoreText`CTFontCreateWithFontDescriptor + 68
frame #12: 0x00000001bff8dfb8 WebCore`WebCore::createCTFont(__CFDictionary const*, float, unsigned int, __CFString const*, __CFString const*) + 124
frame #13: 0x00000001bff8e8bc WebCore`WebCore::FontPlatformData::fromIPCData(float, WebCore::FontOrientation&&, WebCore::FontWidthVariant&&, WebCore::TextRenderingMode&&, bool, bool, std::__1::variant<WebCore::FontPlatformSerializedData, WebCore::FontPlatformSerializedCreationData>&&) + 228
frame #14: 0x00000001c128eef4 WebKit`IPC::ArgumentCoder<WebCore::Font, void>::decode(IPC::Decoder&) + 1352
frame #15: 0x00000001c1333ca4 WebKit`std::__1::optional<WTF::HashMap<WTF::String, WebCore::AttributedString::AttributeValue, WTF::DefaultHashWTF::String, WTF::HashTraitsWTF::String, WTF::HashTraitsWebCore::AttributedString::AttributeValue, WTF::HashTableTraits>> IPC::ArgumentCoder<WTF::HashMap<WTF::String, WebCore::AttributedString::AttributeValue, WTF::DefaultHashWTF::String, WTF::HashTraitsWTF::String, WTF::HashTraitsWebCore::AttributedString::AttributeValue, WTF::HashTableTraits>, void>::decodeIPC::Decoder(IPC::Decoder&) + 480
frame #16: 0x00000001c1333a5c WebKit`std::__1::optional<WTF::HashMap<WTF::String, WebCore::AttributedString::AttributeValue, WTF::DefaultHashWTF::String, WTF::HashTraitsWTF::String, WTF::HashTraitsWebCore::AttributedString::AttributeValue, WTF::HashTableTraits>> IPC::Decoder::decode<WTF::HashMap<WTF::String, WebCore::AttributedString::AttributeValue, WTF::DefaultHashWTF::String, WTF::HashTraitsWTF::String, WTF::HashTraitsWebCore::AttributedString::AttributeValue, WTF::HashTableTraits>>() + 28
frame #17: 0x00000001c1333804 WebKit`std::__1::optional<std::__1::pair<WebCore::AttributedString::Range, WTF::HashMap<WTF::String, WebCore::AttributedString::AttributeValue, WTF::DefaultHashWTF::String, WTF::HashTraitsWTF::String, WTF::HashTraitsWebCore::AttributedString::AttributeValue, WTF::HashTableTraits>>> IPC::Decoder::decode<std::__1::pair<WebCore::AttributedString::Range, WTF::HashMap<WTF::String, WebCore::AttributedString::AttributeValue, WTF::DefaultHashWTF::String, WTF::HashTraitsWTF::String, WTF::HashTraitsWebCore::AttributedString::AttributeValue, WTF::HashTableTraits>>>() + 156
frame #18: 0x00000001c121f368 WebKit`IPC::ArgumentCoder<WebCore::AttributedString, void>::decode(IPC::Decoder&) + 172
frame #19: 0x00000001c121f124 WebKit`std::__1::optionalWebCore::AttributedString IPC::Decoder::decodeWebCore::AttributedString() + 28
frame #20: 0x00000001c12594ec WebKit`IPC::ArgumentCoder<WebCore::DictionaryPopupInfo, void>::decode(IPC::Decoder&) + 76
frame #21: 0x00000001c12d0660 WebKit`std::__1::optionalWebCore::DictionaryPopupInfo IPC::Decoder::decodeWebCore::DictionaryPopupInfo() + 28
frame #22: 0x00000001c12ceef0 WebKit`IPC::ArgumentCoder<WebKit::WebHitTestResultData, void>::decode(IPC::Decoder&) + 1292
frame #23: 0x00000001c1338950 WebKit`std::__1::optionalWebKit::WebHitTestResultData IPC::Decoder::decodeWebKit::WebHitTestResultData() + 28
frame #24: 0x00000001c1ec7edc WebKit`WebKit::WebPageProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 31392
frame #25: 0x00000001c1fb8f28 WebKit`IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) + 272
frame #26: 0x00000001c19ab2c0 WebKit`WebKit::WebProcessProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 44
frame #27: 0x00000001c1fb3254 WebKit`IPC::Connection::dispatchMessage(WTF::UniqueRefIPC::Decoder) + 252
frame #28: 0x00000001c1fb3768 WebKit`IPC::Connection::dispatchIncomingMessages() + 576
frame #29: 0x00000001b9ab90c4 JavaScriptCore`WTF::RunLoop::performWork() + 204
frame #30: 0x00000001b9ab9fec JavaScriptCore`WTF::RunLoop::performWork(void*) + 36
frame #31: 0x000000019b8cc8a4 CoreFoundation`CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 28
frame #32: 0x000000019b8cc838 CoreFoundation`__CFRunLoopDoSource0 + 176
frame #33: 0x000000019b8cc59c CoreFoundation`__CFRunLoopDoSources0 + 244
frame #34: 0x000000019b8cb138 CoreFoundation`__CFRunLoopRun + 840
frame #35: 0x000000019b8ca734 CoreFoundation`CFRunLoopRunSpecific + 588
frame #36: 0x00000001a6e39530 HIToolbox`RunCurrentEventLoopInMode + 292
frame #37: 0x00000001a6e3f348 HIToolbox`ReceiveNextEventCommon + 676
frame #38: 0x00000001a6e3f508 HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 76
frame #39: 0x000000019f442848 AppKit`_DPSNextEvent + 660
frame #40: 0x000000019fda8c24 AppKit`-[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 688
frame #41: 0x000000019f435874 AppKit`-[NSApplication run] + 480
frame #42: 0x000000019f40c068 AppKit`NSApplicationMain + 888
frame #43: 0x00000001ca56a70c SwiftUI`merged generic specialization <SwiftUI.TestingAppDelegate> of function signature specialization <Arg[0] = Existential To Protocol Constrained Generic> of SwiftUI.runApp(__C.NSResponder & __C.NSApplicationDelegate) -> Swift.Never + 160
frame #44: 0x00000001ca9e09a0 SwiftUI`SwiftUI.runApp<τ_0_0 where τ_0_0: SwiftUI.App>(τ_0_0) -> Swift.Never + 140
frame #45: 0x00000001cad5ce68 SwiftUI`static SwiftUI.App.main() -> () + 224
frame #46: 0x0000000105943104 MyApp Dev.debug.dylib`static MyMacApp.$main() at :0
frame #47: 0x0000000105943c9c MyApp Dev.debug.dylib`main at MyMacApp.swift:24:8
frame #48: 0x000000019b464274 dyld`start + 2840
Dears,
We are facing some issue in ios 18.4.1. Recently some of our end users who updated their ios devices to 18.4.1 have experienced random 403 errors in runtime. as per our analysis, We identified that these errors are associated with "CSRF token mismatch".
After successful login, the user's CSRF token is causing issue and it was changed in runtime, this causes the cookie mismatch, and the users is getting 403 errors, and the user session is getting invalid suddenly.
let me know if anyone facing the same issue in ios 18.4.1 and let me know Is there any workaround for this issue.
Thanks.
I want to migrate from a Safari App Extension to a Safari Web Extension, but don't know how to get rid of the message, telling users that my extension can access their passwords. Here is a message which I see:
I was thinking that this might be because all Safari Web Extension get this type of access, but I have a Safari Web Extension which does not require such level of access:
Here is the manifest:
{
"manifest_version": 2,
"default_locale": "en",
"name": "__MSG_extension_name__",
"description": "__MSG_extension_description__",
"version": "1.1",
"icons": {
"48": "images/icon-48.png"
},
"background": {
"scripts": [
"background.js"
],
"persistent": true
},
"browser_action": {
"default_popup": "popup.html",
"default_icon": {
"16": "images/toolbar-icon-16.png"
}
},
"permissions": [
"nativeMessaging", "tabs"
]
}
and here is the Info.plist file:
Here is the entire code of the extension:
https://github.com/kopyl/web-extension-simplified
SwiftUI List Accessibility VoiceOver
Topic:
Safari & Web
SubTopic:
General
Using the PaymentRequestAPI, I see this request element listed, but I can't find any description what these features could be:
sequence <ApplePayFeature> features;
https://developer.apple.com/documentation/apple_pay_on_the_web/applepayrequestbase
https://developer.apple.com/documentation/apple_pay_on_the_web/applepayrequestbase/4224914-features
This is a rare occurrence on our site, having only detected 4 instances of it over the past few weeks, where 10s of thousands of transactions have occurred successfully.
We only call the following PaymentRequest API onClick from the <apple-pay-button>:
async function startApplePay(merchantIdentifier, amount) {
...
try {
const request = new PaymentRequest([ applePayMethod ], paymentDetails);
...
catch (e) {
// cancel, just stay here
if (e.name === "AbortError") {
if (consoleLog) console.log("Payment canceled", e);
logServer("INFO", "Payment canceled");
}
else {
handleError("Error caught: " + e.name + ", " + e.cause + ", " + e.message);
}
}
Where the "handleError" else case is what gets triggered:
Error caught: SecurityError, undefined, show() must be triggered by user activation.
All 4 instances have been from iPads, but with that small of a sample size, we can't tell whether that's relevant or coincidence. Different iOS versions, but looks like same Safari version.
Here are the 4 User Agents we've seen thus far:
Mozilla/5.0 (iPad; CPU OS 18_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GSA/352.0.715618234 Mobile/15E148 Safari/604.1
Mozilla/5.0 (iPad; CPU OS 17_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GSA/352.0.715618234 Mobile/15E148 Safari/604.1
Mozilla/5.0 (iPad; CPU OS 18_3_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/133.0.6943.33 Mobile/15E148 Safari/604.1
Mozilla/5.0 (iPad; CPU OS 18_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/133.0.6943.33 Mobile/15E148 Safari/604.1