Allow content to decide the content size.
MODIFY
WalletWasabi.Gui/Styles/Styles.xaml
WalletWasabi.Gui/Styles/Styles.xaml
<converters:ErrorDescriptorToBorderColorConverter x:Key="ErrorDescriptorToBorderColorConverter" />
</Style.Resources>
</Style>
+
+ <Style Selector="NotificationCard/template/ ContentControl#PART_Content">
+ <Setter Property="MinHeight" Value="50" />
+ </Style>
+
<Style Selector="shell|MetroWindow /template/ Button#minimiseButton">
<Setter Property="Content">
<Template>

Allow content to decide the content size.