diff --git a/PartPreviewWindow/View3D/Actions/SubtractAndReplaceObject3D.cs b/PartPreviewWindow/View3D/Actions/SubtractAndReplaceObject3D.cs
index 0cb446e80..888fae932 100644
--- a/PartPreviewWindow/View3D/Actions/SubtractAndReplaceObject3D.cs
+++ b/PartPreviewWindow/View3D/Actions/SubtractAndReplaceObject3D.cs
@@ -56,6 +56,8 @@ namespace MatterHackers.MatterControl.PartPreviewWindow.View3D
 		{
 			if ((invalidateType.InvalidateType == InvalidateType.Content
 				|| invalidateType.InvalidateType == InvalidateType.Matrix
+				|| invalidateType.InvalidateType == InvalidateType.Color
+				|| invalidateType.InvalidateType == InvalidateType.Material
 				|| invalidateType.InvalidateType == InvalidateType.Mesh)
 				&& invalidateType.Source != this
 				&& !RebuildSuspended)
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index 205ab3d4f..318ba954c 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit 205ab3d4f7fdf1744ed8ff554ab504d0f823edc2
+Subproject commit 318ba954c3fa9f75d0f95a171fe0faaac602985a