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Cannot access Freezable System.Windows.Media.SolidColorBrush across threads because it cannot be frozen


Product Version
Telerik UI for WPF 2023.3.1114


InvalidOperationException occurs in some cases when using the Telerik Windows8 theme in a scenario with multiple UI threads.

InvalidOperationException was unhandled by user code Message=Cannot access Freezable 'System.Windows.Media.SolidColorBrush' across threads because it cannot be frozen.


To fix the issue, call the Freeze method on the Windows8Palette object.

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