Note: This is an alpha release. Please file new issues for any bugs you find in it.

This release is published to npm under the alpha tag and can be installed via npm install electron@alpha, or npm install electron@27.0.0-alpha.1.

Release Notes for v27.0.0-alpha.1

Features

• Added safeStorage.setUsePlainTextEncryption and safeStorage.getSelectedStorageBackend api. #38873 (Also in 25, 26)
• Added senderIsMainFrame to messages sent via ipcRenderer.sendTo(). #38868 (Also in 24, 25, 26)
• Added a title parameter to webContents.openDevTools()to specify the DevTools window title. #39047
• Added partial support for chrome.tabs.query. #39330 (Also in 25, 26)
• Added support for --dns-result-order Node.js cli flag. #39376 (Also in 25, 26)
• Added support for customization of the default math font along with other fonts. #38514
• Added support for flagging a Menu as being keyboard initiated. #38903 (Also in 26)
• Added support for several more Node.js cli flags in the main process. #39344 (Also in 24, 25, 26)
• Added the ability to send HTTP headers with session.downloadURL(). #38785 (Also in 25, 26)
• BrowserWindow.getBrowserView() started to guarantee returning z-index sorted array. #38943
• BrowserWindow.showAllTabs api added. #38965
• Support Chrome Extensions minimum_chrome_version manifest key. #39256 (Also in 26)
• The ipcRenderer.sendTo() API has been deprecated in favor of sharing a MessageChannel between two renderers. #39091
• node: prefixed requires are now supported in sandboxed renderer preloads for events, timers and url. #38567 (Also in 24, 25, 26)

Fixes

• Added transparent color support for WCO on Windows. #38693 (Also in 25, 26)
• Fixed clipboard.readImage() getting blocked when there is no PNG image in the clipboard. #39466 (Also in 26)
• Fixed desktopCapturer thumbnail generation after screen sharing is cancelled on Wayland. #39194 (Also in 25, 26)
• Fixed preload script may not run in some child windows opened by window.open. #38910 (Also in 23, 24, 25, 26)
• Fixed webContents.printToPDF preferCSSPageSize type error. #38761 (Also in 24, 25, 26)
• Fixed a crash calling nativeImage.resize() before the app ready event. #38836 (Also in 26)
• Fixed a crash in. #39069 (Also in 26)
• Fixed a crash seen when trying to change nativeTheme source during mara context menu close. #38824 (Also in 25, 26)
• Fixed a crash when listing desktop capture sources on Wayland with PipeWire. #38833 (Also in 23, 24, 25, 26)
• Fixed a potential crash calling BrowserWindow.removeBrowserView() with a destroyed webContents. #38842 (Also in 24, 25, 26)
• Fixed a potential crash when calling BrowserWindow.moveTop() on modal child windows. #39499 (Also in 24, 25, 26)
• Fixed a potential crash when calling tray.popUpContextMenu on macOS. #39231 (Also in 26)
• Fixed a potential crash when re-parenting a BrowserWindow whose first parent has been destroyed. #39062 (Also in 26)
• Fixed a rare crash when closing active native tab on macOS. #39394 (Also in 25, 26)
• Fixed a redundant permission popup while fetching screens and windows using desktopCapturer.getSources() on Wayland. #39111 (Also in 26)
• Fixed an accessibility issue where VoiceOver couldn't trigger the tray action when selected to emit the click event. #39352 (Also in 26)
• Fixed an error with webContents.print parameter validation by adding missing options required to set printer printable area. #38614 (Also in 25, 26)
• Fixed an issue on Windows 10 where the title bar was not correct after changing native theme. #39287 (Also in 25, 26)
• Fixed an issue where <datalist> popups are positions incorrectly in BrowserViews. #38489 (Also in 23, 24, 25, 26)
• Fixed an issue where BrowserWindow.moveAbove() and BrowserWindow.moveTop() did not work for child windows on macOS. #39034 (Also in 24, 25, 26)
• Fixed an issue where browserView.removeBrowserView could cause a crash in some cases. #39387 (Also in 24, 25, 26)
• Fixed an issue where chrome.i18n did not work properly with Chrome Extensions Manifest V3. #39291 (Also in 24, 25, 26)
• Fixed an issue where chrome.tabs.update did not return a tab object that properly reflected potential properties that were changed. #39365 (Also in 25, 26)
• Fixed an issue where protocol.handle() never called its callback with the 'file' scheme. #39048 (Also in 25, 26)
• Fixed an issue where webContents.print() stopped triggering its callback when the user cancelled the print dialog. #38709 (Also in 25, 26)
• Fixed an issue where window.open can interfere with various aspects of Node.js functionality. #38754
• Fixed an issue where certain Electron classes had incorrect prototype class names. #39006 (Also in 25, 26)
• Fixed an issue where files could in some circumstances be selection when openFile was not passed as a dialog property. #38557 (Also in 24, 25, 26)
• Fixed an issue where macOS traffic lights could malfunction on child windows in some circumstances. #39225 (Also in 24, 25, 26)
• Fixed an issue where non-resizable windows incorrectly enabled the fullscreen/maximize button on initial window creation on macOS. #39086 (Also in 24, 25, 26)
• Fixed an issue where notifications created on macOS which have no actions will erroneously have a Show button visible. #38997 (Also in 24, 25, 26)
• Fixed an issue where passing webContents.print(null) could incorrectly trigger an error. #38612 (Also in 24, 25, 26)
• Fixed an issue where printing on Windows could trigger a crash. #38976 (Also in 25, 26)
• Fixed an issue where removing a webview in a close callback could cause crashes. #38996 (Also in 24, 25, 26)
• Fixed an issue where service workers could not run Chrome APIs in Chrome Extensions Manifest V3. #39290 (Also in 25, 26)
• Fixed an issue where the pageVisibility API returned incorrect values in some situations when backgroundThrottling was disabled. #39223 (Also in 25, 26)
• Fixed an issue with webContents.print({ silent: true }) not working correctly. #38741 (Also in 25, 26)
• Fixed an issue with potential use-after-free of child windows on close and reparent. #38603 (Also in 24, 25, 26)
• Fixed an issue with the application menu overlapping menu items on Windows 11. #38998 (Also in 25, 26)
• Fixed asar integration for node:child_process imports. #38742 (Also in 24, 25, 26)
• Fixed crash in message ports when utility process exits. #39335 (Also in 25, 26)
• Fixed display of title bar buttons on Wayland. #39003 (Also in 25, 26)
• Fixed minimize button to be visible when all buttons reenabled. #38860 (Also in 23, 24, 25)
• Fixed potential invalid protocol error handling. #38587 (Also in 25, 26)
• Fixed problem with promise resolved to early when browser intendent in-page navigation. #39260
• Fixed visibility of menu bar when exiting full screen. #38599 (Also in 23, 24, 25, 26)
• Notes: Fixes an issue where chrome.tabs did not work properly with Chrome Extensions Manifest V3. #39317 (Also in 25, 26)

Other Changes

• The enable_osr build flag has been removed. #38703
• The enable_picture_in_picture build flag has been removed. #38620
• The enable_run_as_node build flag has been removed in favor of the runAsNode fuse. #38413
• The senderId and senderIsMainFrame properties of IpcRendererEvent have been deprecated. #39381
• The systemPreferences.getAppLevelAppearance and systemPreferences.setAppLevelAppearance APIs have been deprecated, as well as the alternate-selected-control-text value for systemPreferences.getColor. #39343 (Also in 26)
• The webContents.getPrinters API has been deprecated. #39356 (Also in 26)
• The deprecated color scheme changed events in systemPreferences have been removed. #39341
• Updated Chromium to 118.0.5949.0. #39505
• Updated Node.js to v18.17.1. #39457

Unknown

• Fixed an issue where setting bounds on BrowserViews can behave inconsistently across platforms. #38981 (Also in 25, 26)