Hi, I’m encountering an unexpected issue in Safari. Specifically, navigator.clipboard.writeText() fails when called from a content script in my extension immediately after sending a message to background.js while it works fine in Chrome and Firefox. Is this expected? Environment Safari 18.2 (20620.1.16.11.8) Technology Preview 210 macOS Sequoia 15.2 (24C101) Example This is a minimal reproducible example, which adds a button to example.com: https://github.com/mshibanami/ClipboarAPIIssueExample Below is the related code: // content.js copyButton.addEventListener('click', async () => { // 👇️ This call seems to trigger the issue await chrome.runtime.sendMessage({}); try { await navigator.clipboard.writeText(text); alert(`✅ Copied '${text}' to clipboard!`); } catch (err) { alert(err + '\n\n' + `navigator.userActivation.isActive: ${navigator.userActivation.isActive}`); } }); // background.js chrome.runtime.onMessage.addListener(() => { }); When I click the button, I expect the text to be copied successfully. However, I receive an error in Safari.: Interestingly, if I remove chrome.runtime.sendMessage(), the clipboard operation works without any problems. Also, note that navigator.userActivation.isActive is true, which might mean it's not related to the User Activation API. Misc. This might be related to another question I posted here: https://developer.apple.com/forums/thread/772275

Hello. We are adding a Safari extension to our app and we have some questions about communication between the app and its extension. We have added the nativeMessaging permission to the extension so that it can communicate with the app and communication between both are doing very well. Our question is about the security of communications between the two. How can we be sure the native app communicates well with the correct extension? Can the Safari extension communicate with another native app or can the native app receive messages from another extension?

I have a Safari Extension which replaces default new tab and puts a link on a generated new tab. This link can be either usual URL link, or a URL Scheme, something like plecoapi://x-callback-url/df?hw=${char}&sec=dict In iOS 17 and previosly, this link worked flawlessly. In iOS 18, including 18.2, this X-Callback-URL link works only once, if I kill Safari process, reopen Safari and tap the link. Each subsequent tap will just reload the page, link won't work anymore until the next Safari reload. Usual URL links works every time without a problem.

I'm trying to use DDM manager Safari Extensins in macOS Sequoia. I generate json and load it by mdm and ddm , but it doesn't seems to work. The json I loading is the following: { "Type": "com.apple.configuration.safari.extensions.settings", "Payload": { "ManagedExtensions": { "*": { "State": "AlwaysOn", "PrivateBrowsing": "AlwaysOn", "AllowedDomains": [], "DeniedDomains": [] } } }, "Identifier": "com.test.safari" } This following image is macOS Sequoia Console log. It show the "com.apple.configuration.safari.extensions.settings" had been run successfully, and no errors. macOS Sequoia response is the following: { "StatusItems" : { "management" : { "declarations" : { "activations" : [ { "active" : true, "identifier" : "com.example.act", "valid" : "valid", "server-token" : "5cc191206d1b1933" } ], "configurations" : [ { "active" : true, "identifier" : "com.test.safari", "valid" : "unknown", "server-token" : "29d3ec5ab48e6367" } ], "assets" : [ ], "management" : [ ] } } }, "Errors" : [ ] } you can see macOS Sequoia response , The "valid" value is always "unknown" at ""identifier" : "com.test.safari", but "Errors" is empty, Safari app don't load extensions , the SafariExtensionSettings" ddm don't work, Is there anything wrong with "SafariExtensionSettings" json? or how can I debug it

I'm trying to use DDM manager Safari Extensins in macOS Sequoia. I generate json and load it by mdm and ddm , but it doesn't seems to work. The json I loading is the following: { "Type": "com.apple.configuration.safari.extensions.settings", "Payload": { "ManagedExtensions": { "*": { "State": "AlwaysOn", "PrivateBrowsing": "AlwaysOn", "AllowedDomains": [], "DeniedDomains": [] } } }, "Identifier": "com.test.safari" } macOS Sequoia response is the following: { "StatusItems" : { "management" : { "declarations" : { "activations" : [ { "active" : true, "identifier" : "com.example.act", "valid" : "valid", "server-token" : "5cc191206d1b1933" } ], "configurations" : [ { "active" : true, "identifier" : "com.test.safari", "valid" : "unknown", "server-token" : "29d3ec5ab48e6367" } ], "assets" : [ ], "management" : [ ] } } }, "Errors" : [ ] } you can see, The "valid" value is always "unknown" at ""identifier" : "com.example.act", but "Errors" is empty, Safari app don't load extensions , the SafariExtensionSettings" ddm don't work, Is there anything wrong with "SafariExtensionSettings" json? or how can I debug this bug .

Enhancement in managing tabs in Safari It would really be awesome to bring the fascinating tab management feature of Arc Browser to Safari across iOS, iPadOS and macOS. Especially below listed features; Multitask Create Organize Rev Up Release Notes For further info , here is the official link of Arc Browser, https://resources.arc.net/hc/en-us/categories/16435255982103-Features.

I'm making a Safari extension for learning languages. I need speech synthesis for any language the user chooses to learn. I initially tried to make this work within JavaScript, but Safari 18 doesn't reliably list voices for all languages on the web SpeechSynthesis API as described here: https://stackoverflow.com/questions/79179072/how-do-you-use-a-japanese-voice-with-speechsynthesis-in-safari-ios-18 As a workaround, I've had to use AVSpeechSynthesizer in SafariWebExtensionHandler (NSExtensionRequestHandling implementation for the extension). This works in the simulator but not on a real device. I've found this note from Apple in a StackOverflow reply: "Safari extensions are very short-lived, hence not fit for audio playback or speech synthesis. Not being able to validate an app extension in Xcode with a manually-added plist entry for background audio is the designed behavior. The general recommendation is to synthesize speech using JavaScript in conjunction with the Web Speech API." Unfortunately, the suggestion to use the Web Speech API is unsuitable as I just explained. Is there a way to set up a background process in the host app that can do speech synthesis? The app extension would need a way to communicate with this process, and start it if it's not running. Is that possible?