Do not set width
MODIFY
WalletWasabi.Fluent/Views/NavBar/NavBar.axaml
WalletWasabi.Fluent/Views/NavBar/NavBar.axaml
</AutoCompleteBox.Styles>
<AutoCompleteBox.ItemTemplate>
<DataTemplate>
- <Panel Background="Transparent" Width="{Binding #SearchAutoCompleteBox.Bounds.Width}">
+ <Panel Background="Transparent">
<i:Interaction.Behaviors>
<ia:EventTriggerBehavior EventName="PointerPressed">
<ia:ChangePropertyAction TargetObject="{Binding #SearchAutoCompleteBox}" PropertyName="Text" Value="" />

Do not set width