Add vertical style for Separator
MODIFY
WalletWasabi.Fluent/Styles/Separator.axaml
WalletWasabi.Fluent/Styles/Separator.axaml
<Setter Property="Background" Value="{DynamicResource SeparatorBackgroundBrush}" />
<Setter Property="Opacity" Value="0.5" />
</Style>
+
+ <Style Selector="Separator.vertical">
+ <Setter Property="Height" Value="NaN" />
+ <Setter Property="Width" Value="0.55" />
+ </Style>
+
</Styles>

Add vertical style for Separator