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I made a Safari Web extension that's supposed to work like this: WHEN: Safari is opening http://example.com/ THEN: The extension opens a page embedded in the extension instead. This is the implementation of background.js: browser.tabs.onUpdated.addListener(async function (tabId) { const tab = await browser.tabs.get(tabId); if (tab.url == "http://example.com/") { const destination = browser.runtime.getURL("embedded-page.html"); browser.tabs.update(tabId, { url: destination }); } }, null); This is the source project: https://www.icloud.com/iclouddrive/042qIjivEoJ0V3qIcLGcytAPA When opening http://www.example.com/ for the first time, it successfully navigates to the embedded page. However, once that navigation is done, the extension no longer works that way unless I re-enable the extension. It's like the listeners are removed by that navigation. This is the video of this issue: https://www.icloud.com/iclouddrive/0f9Yl1jC9eQ8OmgH8vAtEA6Pw Can you replicate this on your Mac? And do you know what's the cause? This happens for a listener of browser.webNavigation.onBeforeNavigate too. Maybe more. On the other hand, when I set a normal page such as https://www.apple.com/ to destination, It always works fine for me. So I'm wondering if this issue is related to the embedded page. FYI, I already reported this issue as FB9967637 on 27th March but no reply from Apple as of now. My environment macOS Monterey 12.3.1 (21E258) Safari 15.4

I'm now trying to add Drag & Drop feature to my NSTableView which uses NSTableViewDiffableDataSource for its data source. However, I can't implement the methods for Drag & Drop like tableView(:, acceptDrop:, row:, dropOperation:). My code looks like this: swift class MyViewController: NSViewController { private let tableView: NSTableView = {...}() private lazy var dataSource = MyDataSource(tableView: tableView) ... } class MyDataSource: NSTableViewDiffableDataSourceSection, Model { ...     override func tableView(_ tableView: NSTableView, draggingSession session: NSDraggingSession, willBeginAt screenPoint: NSPoint, forRowIndexes rowIndexes: IndexSet) { ...     } } Since NSTableViewDiffableDataSource implements NSTableViewDataSource protocol which provides Drag & Drop methods, I thought the above overriding method would work but I got this error. Method does not override any method from its superclass What happened? And if this is expected, how can I implement Drag & Drop with NSTableViewDiffableDataSource?

I'm trying to present a resizable NSWindow defined like this: let window = NSWindow() window.contentViewController = NSHostingController( rootView: Rectangle().frame(minWidth: 100, minHeight: 100)) window.styleMask.insert([.closable, .resizable]) Generally, I can resize this window but somehow I can NOT when it's presented from Safari app extension (.appex). Did I miss something? Does anyone know what's happening?

I'm developing a Safari web extension for macOS that calls SFSafariApplication.dispatchMessage() (Swift) to communicate with background.js and the popup. However, I noticed that the method forcefully switches Safari to foreground. It seems it happens after calling browser.runtime.sendNativeMessage(''); in JavaScript. Is there a way to avoid that behavior? Or perhaps I'm misunderstanding something? This is a sample project and its video (Safari is switched to foreground every 3 seconds.): Sample project: https://www.dropbox.com/s/vs7h128ef1ji34q/ForcefulForegroundIssuePlayground.zip?dl=0 Video: https://www.dropbox.com/s/7pjbh1rihnh068l/Screen%20Recording%202021-12-23%20at%205.42.44%20pm.mov?dl=0 By the way, I already submitted a feedback for this as FB9804951 about 2 weeks ago but no response from Apple so far and I don't know if Apple will take any action for that or not even after the new year so I decided to ask here as well.