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The window background is not shown correctly in the designer

See original GitHub issue

Describe the bug

If one designs a MetroWindow in the Visual Studios designer it is not shown correctly. It is shown correctly at runtime. This issue is more visible if one uses the dark theme

Steps to reproduce

Create a blank App with MahApps.Metro imported
Set the theme to dark
Create a new MetroWindow
You will notice that the Background is white

Expected behavior

MetroWindow should render the Background correctly. It does if one sets the Background explicitly in XAML

Sample

see https://github.com/Volmancer/OWGENC

Environment

MahApps.Metro version: v2.0.0 v2.1.0 tested
Windows build number: Win10 and Win7 tested
Visual Studio: 2019 16.6.3
Target Framework: .Net Core 3.1 (v4.5.2, v4.7.2)

Screenshots

Designer

Runtime

Issue Analytics

State:
Created 3 years ago
Comments:6 (3 by maintainers)

Top GitHub Comments

3reactions

punker76commented, Jul 8, 2020

Oh yeah, I didn’t noticed that the Background was set explicitly. Doesn’t work in preview. But it’s not a MahApps issue, it should be delegate to VS team.

2reactions

timuniecommented, Jul 8, 2020

Created an issue at VS: https://developercommunity.visualstudio.com/content/problem/1106526/wpf-designer-the-window-background-is-not-shown-co.html

The more people vote for it, the better the chance that MS looks for it.

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