Note: This is a beta release, this means it may be shipping with an unreleased version of Chromium.
Please file new issues for any bugs you find in it.
Added support for explicitly specifying direct, auto_detect or system modes in session.setProxy(). #24937
Added support for showing macOS share menu. #25629
Adds fast user switching event to powerMonitor on macOS. #25321
Allowed setting the 'Origin' header and Sec-Fetch-* headers in net.request(). #26135
Changed the default of crashReporter.start({ compress }) from false to true. #25288
Implemented Electron Fuses for customizing certain Electron features at package time. #24241
Implemented custom Toast XML notifications on Windows
Added failure reporting of notifications on Window. #25401
Improved dark mode support on Windows. #25373(Also in 10, 11)
Removed links to the Electron website from the default 'Help' menu in packaged apps. #25831
Removed the desktopCapturer.getMediaSourceIdForWebContents() API. #25414(Also in 11)
The launchInfo of app event ready is now populated with information from UNNotificationResponse when the app is launched via a notification presented by UNUserNotificationCenter (in a native node module). #25950
Updated setPermissionRequestHandler to correctly recognize permissions being requested. #26172(Also in 11)
Windows 10 versions 2004 and later support WDA_EXCLUDEFROMCAPTURE and will now exclude a window entirely from screen capture when setContentProtection is enabled. Older Windows versions will continue to show a black window as before. #24274
Fixes
Added missing module delay loads on windows to reduce per process reference set impact. #25428(Also in 9, 10, 11)
Browser views will properly resize within windows. #25951(Also in 9, 10, 11)
Deprecated the use of the vm module in the renderer process. #26087
Enabled support for new Chromium experimental PDF viewer UI. #26010
Excess menu item separators are now only removed after item re-ordering is done to avoid accidental removal of needed separators. #25563(Also in 10, 11)
Fixed BrowserWindow.fromBrowserView throwing an error when there were multiple BrowserViews in a window. #26493
Fixed CORS not being disabled by webSecurity: false. #25463(Also in 9, 10, 11)
Fixed Electron not working on Windows 7 after https://github.com/electron/electron/pull/25076. #25162(Also in 8, 9, 10, 11)
Fixed GdiTextPrinting when used with silent printing. #25679(Also in 9, 10, 11)
Fixed NativeImage.crop().toBitmap() returning incorrect data. #25757(Also in 10, 11)
Fixed NativeImage.getScaleFactors() always returning the same value. #25832(Also in 9, 10, 11)
Fixed LC_ALL environment variable getting changed in Electron. #26507(Also in 9, 10, 11)
Fixed ready-to-show event not emitted on some machines. #25448(Also in 8, 10, 11)
Fixed ses.setCertificateVerifyProc canceling requests in unrelated sessions. #26517
Fixed window.open not accepting size values with "px" at the end. #26104(Also in 10, 11)
Fixed a crash in app.importCertificate() on Linux. #25523(Also in 9, 10, 11)
Fixed a crash in printing on Windows. #25622(Also in 9, 10, 11)
Fixed a crash in the renderer process when invoking the Badging API. #25294(Also in 9, 10, 11)
Fixed a crash seen when printing. #25989(Also in 11)
Fixed a crash that could happen when a window was closed while a webview was in the process of being attached. #25431(Also in 11)
Fixed a crash when closing window in an event listener after exiting fullscreen on macOS. #25468(Also in 9, 10, 11)
Fixed a rare crash on Windows that could occur when emitting certain powerMonitor events. #25836(Also in 10, 11)
Fixed an Uncaught TypeError when opening DevTools. #26474(Also in 11)
Fixed an issue that could cause a normally-exiting process to fail with an "illegal access" message and exit code 7. #25430(Also in 8, 9, 10, 11)
Fixed an issue that file length is not available in 'will-download' event when file is downloaded thourgh intercepted request. #25324
Fixed an issue where Hover Text on macOS Catalina did not work without VoiceOver also being enabled. #26183(Also in 9, 10, 11)
Fixed an issue where Wasm code generation erroneously showed as being disallowed by embedder when contextIsolation was enabled. #25777(Also in 10, 11)
Fixed an issue where Windows notifications with timeoutType of 'never' did not work properly. #25820(Also in 9, 10, 11)
Fixed an issue where Save as PDF from PDF Viewer Print dialog failed and sometimes crashed. #25959(Also in 9, 10, 11)
Fixed an issue where document.hasFocus and document.activeElement would be inconsistent upon showing a window that was initially created with show: false. #25292(Also in 10, 11)
Fixed an issue where an error would be displayed when using webContents.print() if no default was set and no device name provided. #25515(Also in 9, 10, 11)
Fixed an issue where draggable regions did not work exclusively on BrowserViews. #26145(Also in 9, 10, 11)
Fixed an issue where draggable regions were not properly updated on BrowserViews when a containing BrowserWindow was resized. #26233(Also in 9, 10, 11)
Fixed an issue where events on webview elements were missing properties if contextIsolation was enabled. #26289
Fixed an issue where filters set in dialogs on macOS would have nondeterministic ordering. #25164(Also in 9, 10, 11)
Fixed an issue where frameless windows showed window controls after being in simple fullscreen mode on macOS. #26096(Also in 9, 10, 11)
Fixed an issue where net.request would continue downloading data even when the consuming stream was throttled. #25531
Fixed an issue where packages could not be selected with on macOS. #25030(Also in 10, 11)
Fixed an issue where pageRanges was not properly honored when printing. #25064(Also in 10, 11)
Fixed an issue where some Node.js module API calls hung in the renderer process after reloads when render process reuse was enabled. #25869(Also in 9, 10, 11)
Fixed an issue where some buttons were un-clickable in some BrowserViews with draggable regions enabled. #26496(Also in 11)
Fixed an issue where the buffer returned by NativeImage.getBitmap() could point to freed memory. #25782
Fixed an issue whereby a corrupted async_hooks stack would crash the renderer when throwing some errors in the renderer process. #26365(Also in 11)
Fixed bug that meant require.resolve paths option was ignored. #25891(Also in 9, 10, 11)
Fixed calling app.commandLine.appendSwitch('lang') not changing app's locale. #26185(Also in 9, 10, 11)
Fixed crash when application launched from UNUserNotificationCenter notification (via a native node module). #25702(Also in 9, 10, 11)
Fixed crash while exiting Electron after using the Web Serial API. #25969
Fixed crashes caused by attempting to modify destroyed views. #25411(Also in 9, 10, 11)
Fixed crashes using nativeImage on Windows on ARM. #25396(Also in 11)
Fixed detection of launch on login items
Fixed detection of enabled state set by TaskManager. #26515(Also in 11)
Fixed draggable regions stops working when devtools is opened on macOS. #26361(Also in 9, 10, 11)
Fixed error handling on write failure in the protocol module. #26296
Fixed intermittent access violation during redirects (intercepted requests). #25393
Fixed issue where quitAndInstall() would not restart the app upon update completion on macOS Big Sur. #25864(Also in 11)
Fixed issue where setting the spellchecker languages to an empty array would permanently disable the spellchecker till the end of time. #26119(Also in 11)
Fixed main process's console output not printing to devtools on Windows. #25765
Fixed maximized frameless window bleeding to other monitors. #25940(Also in 8, 9, 10, 11)
Fixed memory leak on macOS when using dialog.showMessageBox API. #26078(Also in 8, 9, 10, 11)
Fixed memory leak when creating "Services" menu. #25617(Also in 9, 10, 11)
Fixed multiple dock icons being left in system when calling dock.show/hide on macOS. #25269(Also in 8, 9, 10, 11)
Fixed network permission error when there are multiple WebContents sharing same session are created with web security disabled. #25139(Also in 8, 9, 10, 11)
Fixed ready-to-show event not emitted on some machines. #25632(Also in 10, 11)
Fixed shell.moveItemToTrash on Windows so that it returns false when move was unsuccessful. #25124(Also in 9, 10, 11)
Fixed the following issues for frameless when maximized on Windows. #25052(Also in 8, 9, 10, 11)
Fixed the pretty-print JavaScript feature in DevTools not functioning correctly. #25780
Fixed the remote-debugging-port discovery page showing garbled text. #25576(Also in 10, 11)
Fixed webRequest module not recognizing the encoding of the filename in Content-Disposition header. #25961
Fixed window.open called from child window. #25080(Also in 11)
Removed private API usage that was blocking Mac App Store releases. #26491(Also in 11)
Stopped using private API CTFontDescriptorIsSystemUIFont in MAS build. #26548(Also in 11)
Suppressed a spurious warning about executeJavaScript being called without worldSafeExecuteJavaScript being enabled in apps that do not call executeJavaScript. #25692(Also in 10, 11)
Updated Node root certs to use NSS 3.56. #25313(Also in 8, 9, 10, 11)
Updated internal memory allocation logic such that you no longer need to use the com.apple.security.cs.allow-unsigned-executable-memory codesign entitlement on macOS. #26331
Other Changes
Added a small console hint to console to help debug renderer crashes. #25317(Also in 9, 10, 11)
BrowserWindow.fromWebContents() now returns an accurate result for WebContents in a BrowserView or webview. #25408