Settings and OOBE Windows top window border always black on Windows 10

[pingzing]

Microsoft PowerToys version

0.87.0

Installation method

PowerToys auto-update

Running as admin

Yes

Area(s) with issue?

Settings

Steps to reproduce

When running Windows 10, with accent colors set to be displayed on window borders (not strictly necessary, but makes the issue more visible), open the Settings or OOBE windows. Note the window's top border, the row of pixels is black instead of the accent color.

The issue is visible in this screenshot. Note the top of the window:

This seems to be a bug in WinUI when using ExtendsContentIntoTitleBar. The issue was first reported here: https://github.com/microsoft/microsoft-ui-xaml/issues/6901and is currently being tracked here: https://github.com/microsoft/microsoft-ui-xaml/issues/8948.

I've got a simple fix already working locally, and would be happy to open a draft PR to get this fixed.

✔️ Expected Behavior

The entire window border should display the user's accent color.

❌ Actual Behavior

The top window border is black.

Other Software

No response

[similar-issues-ai[bot]]

We've found some similar issues:

• #30001 , similarity score: 83%

If any of the above are duplicates, please consider closing this issue out and adding additional context in the original issue.

Note: You can give me feedback by 👍 or 👎 this comment.

[pingzing]

Ah, the bot is correct. This is a dupe of #30001.

Want me to just add the extra info around the cause (WASDK bug) and the screenshot to the existing issue?

EDIT: Actually, I'll just do it. No sense waiting for confirmation to Do The Thing.