Update

Author: 0x5bfa

src/Files.App.Controls/BreadcrumbBar/BreadcrumbBarItem.cs

@@ -58,7 +58,7 @@ protected override void OnApplyTemplate()
 			_chevronButton.PointerExited += ChevronButton_PointerExited;
 
 			_chevronDropDownMenuFlyout.Opening += ChevronDropDownMenuFlyout_Opening;
-			_chevronDropDownMenuFlyout.Opened += ChevronDropDownMenuFlyout_Opened; ;
+			_chevronDropDownMenuFlyout.Opened += ChevronDropDownMenuFlyout_Opened;
 			_chevronDropDownMenuFlyout.Closed += ChevronDropDownMenuFlyout_Closed;
 		}
 

src/Files.App.Controls/BreadcrumbBar/BreadcrumbBarLayout.cs

@@ -20,8 +20,8 @@ public partial class BreadcrumbBarLayout : NonVirtualizingLayout
 		private double _spacing = 0d;
 
 		private bool _ellipsisIsRendered;
-		private uint _firstRenderedItemIndexAfterEllipsis;
-		private uint _visibleItemsCount;
+		private int _indexAfterEllipsis;
+		private int _visibleItemsCount;
 
 		public BreadcrumbBarLayout(BreadcrumbBar breadcrumb, double spacing)
 		{
@@ -32,6 +32,7 @@ public BreadcrumbBarLayout(BreadcrumbBar breadcrumb, double spacing)
 		protected override Size MeasureOverride(NonVirtualizingLayoutContext context, Size availableSize)
 		{
 			var accumulatedSize = new Size(0, 0);
+			_availableSize = availableSize;
 
 			// Go through all items and measure them
 			foreach (var item in context.Children)
@@ -58,6 +59,8 @@ protected override Size ArrangeOverride(NonVirtualizingLayoutContext context, Si
 		{
 			double accumulatedWidths = 0d;
 
+			_indexAfterEllipsis = context.Children.Count - 1;
+
 			// Go through all items and arrange them
 			foreach (var item in context.Children)
 			{