diff --git a/MatterControlLib/DesignTools/Primitives/TextObject3D.cs b/MatterControlLib/DesignTools/Primitives/TextObject3D.cs
index 1b168b549..5c04d408b 100644
--- a/MatterControlLib/DesignTools/Primitives/TextObject3D.cs
+++ b/MatterControlLib/DesignTools/Primitives/TextObject3D.cs
@@ -64,7 +64,7 @@ namespace MatterHackers.MatterControl.DesignTools
 				if (!this.Children.Where(c => c.Mesh != null).Any()
 					&& !RebuildLocked)
 				{
-					this.Invalidate(InvalidateType.Properties);
+					this.Rebuild().Wait();
 				}
 
 				return base.Mesh;
diff --git a/MatterControlLib/PartPreviewWindow/View3D/MeshViewerWidget.cs b/MatterControlLib/PartPreviewWindow/View3D/MeshViewerWidget.cs
index e373e03d1..c12400e7e 100644
--- a/MatterControlLib/PartPreviewWindow/View3D/MeshViewerWidget.cs
+++ b/MatterControlLib/PartPreviewWindow/View3D/MeshViewerWidget.cs
@@ -60,7 +60,8 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 
 			if (source is Object3D object3D
 				&& color != source.Color
-					&& color.alpha != 255)
+					&& color.alpha < 255
+					&& color.alpha > 0)
 			{
 				object3D.EnsureTransparentSorting();
 			}
diff --git a/MatterControlLib/PartPreviewWindow/View3D/Object3DControlsLayer.cs b/MatterControlLib/PartPreviewWindow/View3D/Object3DControlsLayer.cs
index 9f54616e2..705c55227 100644
--- a/MatterControlLib/PartPreviewWindow/View3D/Object3DControlsLayer.cs
+++ b/MatterControlLib/PartPreviewWindow/View3D/Object3DControlsLayer.cs
@@ -857,7 +857,8 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 				}
 			}
 
-			if (drawColor.alpha != 255
+			if (drawColor.alpha < 255
+				&& drawColor.alpha > 0
 				&& item is Object3D item3D)
 			{
 				item3D.EnsureTransparentSorting();
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index 644bf5eda..c18ecbe08 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit 644bf5edac1fa7cd579381c4d285405755f8e4b7
+Subproject commit c18ecbe08a331cfd860edc7e635cbb82e044fe5b