https://bugs.winehq.org/show_bug.cgi?id=54410
--- Comment #5 from Esme Povirk madewokherd@gmail.com --- I'd assume it's something to do with this in the theme: https://github.com/madewokherd/wpf/blob/main/src/Microsoft.DotNet.Wpf/src/Th...
I guess that Foreground here is supposed to resolve to "{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}" and that this should be from the Windows theme, not the Foreground property. I wonder of loading XAML instead of BAML messes this up somehow.