Bug Fixes

• [SECURITY] Fixed an issue where windows using nativeWindowOpen could
  lose their configured webContents options when navigating URLs. #9972
• Fixed an issue where the dev tools did not open when using mixed sandbox
  mode. #9983
• Fixed an issue where the native dialogs did not allow any file to be selected
  from <input> elements using accept attributes. #9745
• Fixed an issue where dev tool extension content scripts were not ignoring
  the fragment when matching against the page URL. #9953
• Fixed an issue where calling show() on a modal window would cause the
  parent window to not be re-enabled when the modal was closed. #9962

macOS

• Fixed an issue where the IME did not properly input certain characters. #9709
• Fixed an issue where alwaysOnTop windows would not reappear correctly
  after being restored from a miniaturized position. #9695

Linux

• Fixed Tray objects not properly dispatching a click event when the first
  subitem was selected. #9967

API Changes

• Added a app.disableDomainBlockingFor3DAPIs() API to disable the Chrome
  behavior of disabling 3D APIs for domains where the GPU process crashes
  too frequently. #10003
• The new-window event now supports configuring the webPreferences of
  the window being opened from a window using the sandbox or
  nativeWindowOpen options. #9972

macOS

• A subtitle option is now supported when creating notifications. #9903
• Added a fullscreenWindowTitle option to the BrowserWindow constructor
  to show the window title when in fullscreen for windows using a custom
  titleBarStyle. #9788