Set proper ItemTemplate
MODIFY
WalletWasabi.Fluent/Controls/LabelsListBox.axaml
WalletWasabi.Fluent/Controls/LabelsListBox.axaml
Items="{TemplateBinding Items}"
Margin="0"
VirtualizationMode="Simple">
+ <ItemsPresenter.ItemTemplate>
+ <DataTemplate>
+ <c:LabelControl />
+ </DataTemplate>
+ </ItemsPresenter.ItemTemplate>
<ItemsPresenter.ItemsPanel>
<ItemsPanelTemplate>
<c:LabelsPanel Orientation="Horizontal" Spacing="2" HorizontalAlignment="Left">

Set proper ItemTemplate