Set Popup placement
MODIFY
WalletWasabi.Fluent/Views/NavBar/NavBar.axaml
WalletWasabi.Fluent/Views/NavBar/NavBar.axaml
</Style>
<Style Selector="AutoCompleteBox /template/ Popup#PART_Popup">
<Setter Property="MaxWidth" Value="{Binding $parent[UserControl].Bounds.Width}" />
+ <Setter Property="PlacementMode" Value="AnchorAndGravity" />
+ <Setter Property="PlacementAnchor" Value="Top" />
<Setter Property="PlacementGravity" Value="Top" />
</Style>
<Style Selector="AutoCompleteBox /template/ TextBox DataValidationErrors">

Set Popup placement