Electron: v39.0.0-beta.4 Release

Note: This is a beta release. Please file new issues for any bugs you find in it.

This release is published to npm under the beta tag and can be installed via npm install electron@beta, or npm install [email protected].

# Release Notes for v39.0.0-beta.4

Features

• Added RGBAF16 output format with scRGB HDR color space support to Offscreen Rendering. #48504

• Support dynamic ESM imports in non-context isolated preloads. #48488 <span style="font-size:small;">(Also in 37, 38)</span>

  Fixes

• Fixed an issue where systemPreferences.getAccentColor inverted the color. #48624

• Fixed an issue where trafficLightPosition would not be correctly applied when using titleBarStyle: 'customButtonsOnHover' on macOS 26. #48621 <span style="font-size:small;">(Also in 38)</span>

• Fixed an issue where button background on mouse hover with titleBarOverlay wasn't always calculated to provide appropriate minimum contrast. #48597 <span style="font-size:small;">(Also in 37)</span>

• Fixed an issue where calling webContents.openDevTools({ mode: 'detach' }) would cause a crash on Wayland. #48623

• Fixed an issue where icons didn't show up as expected on Windows Toast notifications. #48629 <span style="font-size:small;">(Also in 38)</span>

• Fixed shader-f16 to work on Windows. #48557 <span style="font-size:small;">(Also in 37, 38)</span>

• Fixed white flash on call to BrowserWindow.show. #48559 <span style="font-size:small;">(Also in 37, 38)</span>

• Titlebar buttons now appear on the correct side of windows on Wayland in Ubuntu. #48603 <span style="font-size:small;">(Also in 38)</span>

  Other Changes

• Updated Chromium to 142.0.7444.34. #48571