Fix incorrect borders

[khusantoy]

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version:
• OS Version:

Steps to Reproduce:

[vs-code-engineering]

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[khusantoy]

Does this issue occur when all extensions are disabled?: Yes

VS Code Version: 1.131.0 (commit e4c7e7b)
OS Version: macOS Tahoe 26.5.2 (Darwin arm64 25.5.0)

Steps to Reproduce:

Open any file with language support that provides IntelliSense/suggestions (e.g. Dart, TypeScript).
Trigger the suggestion widget with Ctrl+Space.
Use the arrow keys to select the first item in the suggestion list — the top-left and top-right corners of the selection highlight render as sharp/square instead of following the widget's rounded corners.
Scroll/navigate to select the last item in the list — the bottom-left and bottom-right corners show the same sharp-corner issue.

Expected behavior: The highlighted selection should respect the suggestion widget's border-radius on all corners, regardless of which item is selected.

Actual behavior: When the first item is selected, the top corners are square. When the last item is selected, the bottom corners are square. This breaks the visual consistency of the widget's rounded design.

I confirmed this also reproduces with --disable-extensions, so it's not caused by any extension.

This looks like a small visual regression that should be quick to fix — could this be considered for the 1.132 milestone?

[khusantoy]

Hi @hawkticehurst, I've updated the description with the required system information and details. Please let me know if you need anything else to reproduce the issue!

[khusantoy]

This issue has been resolved in version 1.32.0. Closing this issue. Thank you!