Description

Multiple ViewModels directly manipulate Mouse.OverrideCursor:

• MainViewModel.cs (lines 525, 601)
• ConsoleViewModel.cs (lines 514, 541)
• PerformanceViewModel.cs (lines 425, 456)
• DependenciesViewModel.cs (lines 352, 377)
• LogsViewModel.cs (lines 331, 371)

Mouse.OverrideCursor = Cursors.Wait;
// ... operation ...
Mouse.OverrideCursor = null;

Mouse.OverrideCursor is a WPF static property that throws in test contexts without a Dispatcher.

Suggested fix

Abstract cursor management behind an ICursorService:

public interface ICursorService
{
    IDisposable SetWaitCursor();
}