CardExpander is difficult to expand

[maihcx]

Describe the bug

When I click on the margin area of ​​CardExpander, the expansion operation does not work.

To Reproduce

Click on the Margin area of ​​CardExpander

Expected behavior

CardExpander expands properly when clicking on any area

Screenshots

Video_2025-10-20_115307.mp4

OS version

Window 11
Version 24H2 (OS Build 26100.6584)

.NET version

.Net 9

WPF-UI NuGet version

4.0.3

Additional context

No response