From f38cd3b60afc7b7c6bef62757aa5776a88cd18bb Mon Sep 17 00:00:00 2001
From: EvanRuiz <evan@musicalfluency.com>
Date: Wed, 22 Jan 2025 12:04:53 -0500
Subject: [PATCH 1/2] Add failing Path Geometry update test

#4748 [BUG] Rerender on change for Paths, Segments and e.g.
Failing Test
---
 .../Media/PathGeometryTests.cs                | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 tests/Avalonia.Base.UnitTests/Media/PathGeometryTests.cs

diff --git a/tests/Avalonia.Base.UnitTests/Media/PathGeometryTests.cs b/tests/Avalonia.Base.UnitTests/Media/PathGeometryTests.cs
new file mode 100644
index 00000000000..9648187e61e
--- /dev/null
+++ b/tests/Avalonia.Base.UnitTests/Media/PathGeometryTests.cs
@@ -0,0 +1,32 @@
+using Avalonia.Media;
+using Xunit;
+
+namespace Avalonia.Base.UnitTests.Media;
+
+public class PathGeometryTests
+{
+    [Fact]
+    public void PathGeometry_Triggers_Invalidation_On_Figures_Add()
+    {
+        var segment = new PolyLineSegment()
+        {
+            Points = [new Point(1, 1), new Point(2, 2)]
+        };
+
+        var figure = new PathFigure()
+        {
+            Segments = [segment],
+            IsClosed = false,
+            IsFilled = false,
+        };
+        
+        var target = new PathGeometry();
+
+        var changed = false;
+
+        target.Changed += (_, _) => { changed = true; };
+        
+        target.Figures?.Add(figure);
+        Assert.True(changed);
+    }
+}

From 2e36a872256a7ef6df8d7da2e00e7402517a725b Mon Sep 17 00:00:00 2001
From: EvanRuiz <evan@musicalfluency.com>
Date: Wed, 22 Jan 2025 12:08:48 -0500
Subject: [PATCH 2/2] Fixes failing Path Geometry update test

Fixes #4748 [BUG] Rerender on change for Paths, Segments and e.g.
---
 src/Avalonia.Base/Media/PathGeometry.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Avalonia.Base/Media/PathGeometry.cs b/src/Avalonia.Base/Media/PathGeometry.cs
index bdfbfadce4d..c07535c00b3 100644
--- a/src/Avalonia.Base/Media/PathGeometry.cs
+++ b/src/Avalonia.Base/Media/PathGeometry.cs
@@ -35,7 +35,7 @@ static PathGeometry()
         /// </summary>
         public PathGeometry()
         {
-            _figures = new PathFigures();
+            Figures = new PathFigures();
         }
 
         /// <summary>