v39.8.1

🐛 Bug Fixes

• Added validation to protocol client methods to reject protocol names that do not conform to the RFC 3986 URI scheme grammar.
• Fixed an issue on macOS where calling autoUpdater.quitAndInstall() could fail if checkForUpdates() was called again after an update was already downloaded.
• Fixed an issue where Chrome Devtools menus may not appear in certain embedded windows.
• Fixed an issue where additionalData passed to app.requestSingleInstanceLock on Windows could be truncated or fail to deserialize in the primary instance's second-instance event.
• Fixed an issue where screen.getCursorScreenPoint() crashed on Wayland when it was called before a BrowserWindow had been created.
• Fixed an issue where calling setBounds on a WebContentsView could trigger redundant page-favicon-updated events even when the favicon had not changed.
• Fixed an issue where invalid characters in custom protocol or webRequest response header values were not rejected.
• Fixed an issue where permission and device-chooser handlers received the top-level page origin instead of the requesting subframe's origin.
• Fixed an issue where traffic light buttons would flash at position (0,0) when restoring a window with a custom trafficLightPosition from minimization on macOS.
• Fixed bug where opening a message box immediately upon closing a child window may cause the parent window to freeze on Windows.
• Fixed menu bar hiding after a call to win.setFullScreen(false) when not in fullscreen on Linux.
• Fixed shutdown crash on windows when hidden titlebar is enabled.
• Reverted AltGr key fix that caused menu bar to no longer show on Windows.