This is the dumbest possible thing I could have done

src/cascadia/TerminalApp/SuggestionsControl.cpp

@@ -996,6 +996,22 @@ namespace winrt::TerminalApp::implementation
                 args.ItemContainer(listViewItem);
             }
         }
+
+        // Incredibly bodgy:
+        //
+        // Now that we've found the right ListViewItem, set the font size on it,
+        // to match the size of the control. This might change over the life of
+        // the window.
+        // * we can't use a Style in the resources to set this (it only gets evaluated once)
+        // * we can't bind from the DataTemplate to the parent UserControl's properties
+        //
+        // But this method (_choosingItemContainer) is called on each and every
+        // ListViewItem every time we're opened.
+        if (const auto item{ args.ItemContainer().try_as<ListViewItem>() })
+        {
+            item.FontSize(_FontHeight);
+        }
+
         args.IsContainerPrepared(true);
     }
     // Method Description:
@@ -1104,4 +1120,19 @@ namespace winrt::TerminalApp::implementation
         _searchBox().Select(filter.size(), 0);
     }
 
+    // double SuggestionsControl::FontHeight()
+    // {
+    //     return _fontHeight;
+    //     // return winrt::unbox_value_or<double>(Resources().Lookup(winrt::box_value(L"ListFontSize")), 12.0);
+    // }
+    // void SuggestionsControl::FontHeight(double height)
+    // {
+    //     // Resources().Insert(winrt::box_value(L"ListFontSize"), winrt::box_value(height));
+    //     for (const auto& container : _filteredActionsView().Items())
+    //     {
+    //         auto item{container.try_as<winrt::Windows::UI::Xaml::Controls::ListViewItem>()};
+    //         item.FontSize(height);
+    //     }
+    // }
+
 }

src/cascadia/TerminalApp/SuggestionsControl.h

@@ -50,12 +50,16 @@ namespace winrt::TerminalApp::implementation
         til::typed_event<winrt::TerminalApp::SuggestionsControl, Microsoft::Terminal::Settings::Model::Command> DispatchCommandRequested;
         til::typed_event<Windows::Foundation::IInspectable, Microsoft::Terminal::Settings::Model::Command> PreviewAction;
 
+        // double FontHeight();
+        // void FontHeight(double height);
+
         til::property_changed_event PropertyChanged;
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, NoMatchesText, PropertyChanged.raise);
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, SearchBoxPlaceholderText, PropertyChanged.raise);
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, ControlName, PropertyChanged.raise);
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, ParentCommandName, PropertyChanged.raise);
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, ParsedCommandLineText, PropertyChanged.raise);
+        WINRT_OBSERVABLE_PROPERTY(double, FontHeight, PropertyChanged.raise, 12.0);
 
     private:
         struct winrt_object_hash
@@ -86,6 +90,7 @@ namespace winrt::TerminalApp::implementation
         winrt::TerminalApp::PaletteItemTemplateSelector _itemTemplateSelector{ nullptr };
         std::unordered_map<Windows::UI::Xaml::DataTemplate, std::unordered_set<Windows::UI::Xaml::Controls::Primitives::SelectorItem, winrt_object_hash>, winrt_object_hash> _listViewItemsCache;
         Windows::UI::Xaml::DataTemplate _listItemTemplate;
+        double _fontHeight{ 12.0 };
 
         void _switchToMode();
         void _setDirection(TerminalApp::SuggestionsDirection direction);

src/cascadia/TerminalApp/SuggestionsControl.idl

@@ -28,6 +28,7 @@ namespace TerminalApp
         String SearchBoxPlaceholderText { get; };
         String ControlName { get; };
         String ParentCommandName { get; };
+        Double FontHeight{ get; set; };
 
         Windows.UI.Xaml.FrameworkElement SelectedItem { get; };
 

src/cascadia/TerminalApp/SuggestionsControl.xaml

@@ -25,15 +25,16 @@
 
     <UserControl.Resources>
         <ResourceDictionary>
+            <!-- <Style TargetType="ListViewItem" x:Key="Foo">
+                <Setter Property="FontSize" Value="{x:Bind FontHeight, Mode=OneWay}" />
+            </Style>-->
             <DataTemplate x:Key="ListItemTemplate"
                           x:DataType="local:FilteredCommand">
-                <ListViewItem Height="32"
-                              MinHeight="0"
-                              Padding="16,0,12,0"
+                <ListViewItem MinHeight="0"
+                              Padding="16,6,12,6"
                               HorizontalContentAlignment="Stretch"
                               AutomationProperties.AcceleratorKey="{x:Bind Item.KeyChordText, Mode=OneWay}"
-                              AutomationProperties.Name="{x:Bind Item.Name, Mode=OneWay}"
-                              FontSize="12" />
+                              AutomationProperties.Name="{x:Bind Item.Name, Mode=OneWay}" />
             </DataTemplate>
 
             <DataTemplate x:Key="GeneralItemTemplate"

src/cascadia/TerminalApp/TerminalPage.cpp

@@ -4764,6 +4764,8 @@ namespace winrt::TerminalApp::implementation
         const auto realCursorPos{ controlTransform.TransformPoint({ cursorPos.X, cursorPos.Y }) }; // == controlTransform + cursorPos
         const Windows::Foundation::Size windowDimensions{ gsl::narrow_cast<float>(ActualWidth()), gsl::narrow_cast<float>(ActualHeight()) };
 
+        sxnUi.FontHeight(characterSize.Height);
+
         sxnUi.Open(mode,
                    commandsCollection,
                    filterText,