Release Notes for v19.0.0-alpha.1

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@19.0.0-alpha.1.

Breaking Changes

• Marked .skipTaskbar as unsupported on Linux. #33226

Features

• Added BrowserWindow method to change the button color, symbol color, and height of a window with WCO enabled. #33066 (Also in 18)
• Added nativeTheme.inForcedColorsMode API to allow detecting forced color mode. #32956 (Also in 15, 16, 17, 18)
• Added ses.setCodeCachePath() API for setting code cache directory. #31154 (Also in 17, 18)
• Added ability to configure if window should close when opener closes. #31314
• Added support for more color formats in setBackgroundColor. #31868 (Also in 18)
• Added warning that preload scripts will be sandboxed by default beginning in Electron 20. #32868 (Also in 18)

Fixes

• Added support for the --unsafely-treat-insecure-origin-as-secure command-line flag. #33189
• Fire 'show' event when a BrowserWindow is shown via maximize(). #32979 (Also in 16, 17, 18)
• Fix: initialize asar support in worker threads. #33216 (Also in 18)
• Fixed BrowserWindow.showInactive restoring a maximized window to non-maximized on Windows. #32870 (Also in 16, 17, 18)
• Fixed a V8 crash that could happen randomly in non-sandboxed renderer processes. #33252 (Also in 18)
• Fixed a bug where BrowserWindow.fromWebContents would return undefined during the browser-window-created event. #33257 (Also in 18)
• Fixed a network service crash that could occur when using setCertificateVerifyProc. #33204 (Also in 17, 18)
• Fixed a potential crash in Browser.getFocusedWindow() when child windows are closed. #33404
• Fixed an issue where BrowserView layout bounds where limited to it's visible bounds. #32747 (Also in 17, 18)
• Fixed an issue where Chrom DevTools settings didn't persist between loads. #33120 (Also in 17, 18)
• Fixed an issue where First Party Sets were not correctly loaded on app launch. #33339 (Also in 18)
• Fixed an issue where Pointer Lock behavior could not be properly exited. #32369
• Fixed an issue where alternateImages did not work properly on macOS. #33026 (Also in 15, 16, 17, 18)
• Fixed an issue where webContents.openDevTools({ mode }) did not work for certain dock positions. #32829 (Also in 17, 18)
• Fixed an issue where webContents.savePage failed when passing a relative path instead of an absolute one. #32728 (Also in 15, 16, 17, 18)
• Fixed an issue where clicking "Open in Containing Folder" in the Sources tab in Devtools caused a crash. #33024 (Also in 16, 17, 18)
• Fixed an issue where frameless windows on Windows would incorrectly show a small frame during the loading process. #32692 (Also in 14, 15, 16, 17, 18)
• Fixed an issue where new bounds set via setBounds was not correctly applied if the user was moving or resizing the window concurrently on Windows. #33288 (Also in 18)
• Fixed an issue where pages would not properly print on macOS due to a rendering failure. #32767 (Also in 18)
• Fixed an issue where setting window maxHeight or maxWidth made it so the width and height could no longer be resized. #33025 (Also in 17, 18)
• Fixed an issue where the Tray could get garbage collected incorrectly under some circumstances. #33040 (Also in 15, 16, 17, 18)
• Fixed an issue with background colors being improperly applied to BrowserViews on Windows. #33435
• Fixed an occasional crash on Mac when spawning a child process. #33114 (Also in 17, 18)
• Fixed broken event loop in renderer process when process reuse is enabled on windows platform. #33207 (Also in 16, 17, 18)
• Fixed broken transparency option in offscreen window rendering. #32885 (Also in 16, 17, 18)
• Fixed command string registered via setAsDefaultProtocolClient on windows. #32953 (Also in 14, 15, 16, 17, 18)
• Fixed crash in the render process on reload with pending node fs.promises. #33280 (Also in 15, 16, 17, 18)
• Fixed crash when WindowButtonsProxy references cleared NSWindow. #33069 (Also in 16, 17, 18)
• Fixed drag regions on WCO windows on Windows. #32871 (Also in 15, 16, 17, 18)
• Fixed effect when hovering over window controls on Windows in a WCO-enabled window. #32672 (Also in 14, 15, 16, 17, 18)
• Fixed incorrect external memory allocation tracking in nativeImage module. #33266 (Also in 15, 16, 17, 18)
• Fixed maximizing frameless windows by double-clicking on a draggable (title bar) region. #33438 (Also in 15, 16, 17, 18)
• Fixed multiple issues when running under Wayland caused by calling X11 functions. #33355 (Also in 18)
• Fixed possible race conditions between frame state and electron ipc. #32734 (Also in 17)
• Fixed slowness when using child_process.spawn and related methods on macOS Big Sur and newer. #33337 (Also in 16, 17, 18)
• Fixed stale renderer process when application is quit while renderer is busy. #32888 (Also in 14, 15, 16, 17, 18)
• Fixed the IncrementCapturerCount regression introduced by 13.0.0-beta.21. #32973 (Also in 17, 18)
• SIGUSR1 is no longer handled when the node_cli_inspect fuse is disabled. #33188
• Strip crashpad_handler binary on Linux, reducing bundle size. #33126 (Also in 15, 16, 17, 18)
• Theoretical fix for a crash we're seeing when closing multiple child windows at the same time on macOS. #33063 (Also in 17, 18)

Other Changes

• Chore: backport EPROTOTYPE fixes from libuv. #32856 (Also in 16, 17, 18)
• Fixed an issue where adding/removing display changes the BrowserWindow size. #33109 (Also in 14, 15, 16, 17, 18)
• None. #32731
• Removed the semi-documented preloadURL property from WebPreferences. #33228
• Updated Chromium to 102.0.4962.3. #33447
• Updated Node.js to v16.14.2. #32833
• Updated node types version. #33452 (Also in 18)

Documentation

• Documentation changes: #33042, #33170