Taskbar thumbnail preview broken when window transparency is enabled (Windows)

Describe the bug When enabling window transparency, the taskbar thumbnail preview does not render correctly. Instead of showing a live preview of the window, it displays the application icon. When using large icons, the icon appears to cover the entire thumbnail area.

To Reproduce Steps to reproduce the behavior:

1. Create a Neutralino window
2. Enable transparency
3. Hover over the app icon in the Windows taskbar

Expected behavior The taskbar thumbnail should display a live preview of the window content.

Screenshots/Screen recordings

Specifications

• OS: Windows 11 x64
• Neutralinojs version: 6.7.0
• Neutralinojs client library version: 6.7.0
• Neutralinojs CLI version: 11.7.1