remove unfocused style.
MODIFY
WalletWasabi.Fluent/Controls/NavBarItem.xaml
WalletWasabi.Fluent/Controls/NavBarItem.xaml
</Style>
<!-- Selected Unfocused State -->
- <Style Selector="c|NavBarItem:selected:not(:focus) /template/ Rectangle#PressedBackground">
- <Setter Property="Fill" Value="{DynamicResource SystemControlHighlightListAccentLowBrush}"/>
- </Style>
<Style Selector="c|NavBarItem:selected:not(:focus) /template/ ContentPresenter">
<Setter Property="TextBlock.Foreground" Value="{DynamicResource SystemControlHighlightAltBaseHighBrush}"/>
</Style>

remove unfocused style.