Graphic Artifacts when using GroupBox/Card in ViewBox

Nadie ha tomado este issue todavía.

I have a UserControl with a ViewBox inside.
I don't know why but in dark mode, some graphic artifacts appear when I move my mouse over them

https://user-images.githubusercontent.com/54487782/116099068-e36b2380-a6ab-11eb-9093-8e60a94b9d62.mp4

I've tried to fix it with the different solutions listed here : https://github.com/MaterialDesignInXAML/MaterialDesignInXamlToolkit/issues/1097
I've tried :
- `UseLayoutRounding="True"`
- `SnapsToDevicePixels="True"`
- `RenderOptions.ProcessRenderMode = System.Windows.Interop.RenderMode.SoftwareOnly`

Moreover, I've tried to visualize my ViewBox with Snoop, but Height and Width values seem normal.

In light mode I don't have this problem.

**- EDIT -**
I lowered the brightness of my screen, and I just saw that there are also artifacts in light mode.

Comienza reproduciendo los artefactos reportados con un UserControl que contenga un ViewBox y un GroupBox/Card, comparando los modos oscuro y claro y el vídeo adjunto. Revisa los ajustes intentados de UseLayoutRounding, SnapsToDevicePixels y renderizado por software; se considera terminado cuando los artefactos ya no aparecen al mover el ratón o reducir el brillo de la pantalla.

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