<select> element UI changes in 142

[captainbrosset]

The appearance of <select> elements changed in 142, and we should have mentioned this in our release notes. Here's a PR to add a note about the change retroactively.

Rendered article sections for review:

• Microsoft Edge 142 web platform release notes (Oct. 2025) > UI features

  • /web-platform/release-notes/142.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/142?branch=pr-en-us-3658#ui-features
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/pabrosse/select-multiple/microsoft-edge/web-platform/release-notes/142.md#ui-features
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/142#ui-features
  • New section.

• Site compatibility-impacting changes coming to Microsoft Edge > High-impact changes

  • /web-platform/site-impacting-changes.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/site-impacting-changes?branch=pr-en-us-3658&tabs=latest#high-impact-changes
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/pabrosse/select-multiple/microsoft-edge/web-platform/site-impacting-changes.md#latest-versions
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/site-impacting-changes?tabs=latest#high-impact-changes
  • New row: Mobile and desktop parity for <select> elements.

AB#60440160

[anaskim]

Can't formally approve but LGTM.

[mikehoffms]

LGTM - Writer/Editor

[learn-build-service-prod]

Learn Build status updates of commit dc3d40f:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/web-platform/release-notes/142-images/select-dropdown.png	✅Succeeded	View
microsoft-edge/web-platform/release-notes/142-images/select-list.png	✅Succeeded	View
microsoft-edge/web-platform/release-notes/142.md	✅Succeeded	View
microsoft-edge/web-platform/site-impacting-changes.md	✅Succeeded	View

For more details, please refer to the build report.