[Bug] Some controls use incorrect theme when `ui:WindowHelper.UseModernWindowStyle` not set to True

[66BA9Q-ME49]

Describe the bug

Some controls seem to use light theme even though the whole app is in dark mode.
It happens when the control is in a Window where ui:WindowHelper.UseModernWindowStyle isn't set to True.

Affected controls I've tested:

• NumberBox
• TextBlock

There may be more.

Reproduction

Here is a full C# project showcasing the bug.

NumberBoxReproduce.zip

It should open 2 windows that look like this:

Suggested Solution

Unknown.

Library Version

0.10.2.1

Operating System

Windows 11

Framework

.NET Core and .NET

Framework Version

9

Source of Package

NuGet.org (Package)

Additional Notes

No response

Validations

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