Fixed Windows Mica/Acrylic background material effects on frameless windows.

Fixed tBounds calls not painting view in new bounds in some cases.

Added support for ELECTRON_OZONE_PLATFORM_HINT environment variable on Linux.

Exposed an API to allow apps to determine whether to avoid using semitransparent backgrounds.

For more details see the ESM limitations document. Detect system dark theme preference via xdg settings portal on Linux.Changed systemPreferences.getColor(name) to return an RGBA hex value ( #RRGGBBAA) instead of a plain RGB ( #RRGGBB) value.Added the ability to send HTTP headers with webContents.downloadURL().Added support for several more extensions manifest keys including host_permissions, author, and short_name.Added support for chrome.scripting extension APIs.Added middle click mouse event to tray icon.Added a tabbingIdentifier property to BrowserWindow.Added a generateTaggedPDF option to webContents.printToPDF to allow generating tagged (accessible) PDFs.Added 'mouse-enter' and 'mouse-leave' Tray events for Windows.

Added 'getWebRTCUDPPortRange' and 'setWebRTCUDPPortRange' apis to specify udp port range for webrtc.A dummy module.exports is now passed to the sandboxed preload scripts to improve compatibility with CommonJS modules.Fixed generating frames when the window is hidden and backgroundThrottling is disabled.This release is published to npm under the alpha tag and can be installed via npm install or npm install Release Notes for v28.0.0-alpha.2 Breaking Changes Please file new issues for any bugs you find in it.

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