diff --git a/MatterControlLib/MatterControlLib.csproj b/MatterControlLib/MatterControlLib.csproj
index e5ac14686..87469627e 100644
--- a/MatterControlLib/MatterControlLib.csproj
+++ b/MatterControlLib/MatterControlLib.csproj
@@ -86,7 +86,7 @@
   <ItemGroup>
     <PackageReference Include="AngleSharp" Version="0.9.11" />
     <PackageReference Include="Markdig" Version="0.15.2" />
-    <PackageReference Include="MIConvexHull" Version="1.1.17.1019" />
+    <PackageReference Include="MIConvexHull" Version="1.1.18.1016" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.1.1" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
diff --git a/Submodules/MatterSlice b/Submodules/MatterSlice
index ded9aeabe..abd613e3e 160000
--- a/Submodules/MatterSlice
+++ b/Submodules/MatterSlice
@@ -1 +1 @@
-Subproject commit ded9aeabe383f8a06a53c66219b2ce7fb963477f
+Subproject commit abd613e3e82c8af0fa60fed9b5a509af573f3924
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index 7e70801c0..c7f95927d 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit 7e70801c003906a47ba8e2de31e637c409914ea7
+Subproject commit c7f95927d2ded956426acf5ff891d47d9a962cd7
diff --git a/Tests/MatterControl.Tests/MatterControl/InteractiveSceneTests.cs b/Tests/MatterControl.Tests/MatterControl/InteractiveSceneTests.cs
index 15125a3a7..cc267d97e 100644
--- a/Tests/MatterControl.Tests/MatterControl/InteractiveSceneTests.cs
+++ b/Tests/MatterControl.Tests/MatterControl/InteractiveSceneTests.cs
@@ -48,7 +48,6 @@ namespace MatterControl.Tests.MatterControl
 		[Test, Category("InteractiveScene")]
 		public void CombineTests()
 		{
-			return;
 			AggContext.StaticData = new FileSystemStaticData(TestContext.CurrentContext.ResolveProjectPath(4, "StaticData"));
 			MatterControlUtilities.OverrideAppDataLocation(TestContext.CurrentContext.ResolveProjectPath(4));
 
@@ -64,6 +63,9 @@ namespace MatterControl.Tests.MatterControl
 				var cubeA = new CubeObject3D(20, 20, 20);
 				var cubeB = new CubeObject3D(20, 20, 20);
 				var offsetCubeB = new TranslateObject3D(cubeB, 10);
+				Assert.IsTrue(offsetCubeB.GetAxisAlignedBoundingBox().Equals(new AxisAlignedBoundingBox(
+					0, -10, -10,
+					20, 10, 10), .001));
 
 				var union = new CombineObject3D();
 				union.Children.Add(cubeA);
@@ -71,6 +73,10 @@ namespace MatterControl.Tests.MatterControl
 				root.Children.Add(union);
 
 				union.Combine();
+				Assert.IsTrue(union.GetAxisAlignedBoundingBox().Equals(new AxisAlignedBoundingBox(
+					-10, -10, -10,
+					20, 10, 10), .001));
+
 				union.Flatten(null);
 
 				Assert.AreEqual(1, root.Children.Count());
@@ -264,7 +270,6 @@ namespace MatterControl.Tests.MatterControl
 		[Test, Category("InteractiveScene")]
 		public void SubtractTests()
 		{
-			return;
 			// Subtract has correct number of results
 			{
 				var root = new Object3D();